Vangelis freeze on custom build

smespresati · April 19, 2026, 3:04pm

Hi guys,

I’ve been fighting making my custom build to work. My hardware is: pi 5, arturia minifuse 2 otg (usb), display Minix SF10T (hdmi+usb). It’s a touch only setup. Zynthian boot from nvme and I’m using a 100 w power by Iniu.

This setup works pretty well with Oram stable, then I updated to Vangelis.

I can easily setup touch interface in Vangelis, but the gui freezes after a while and I’ve discovered how to reproduce the issue: unhide v5 keypad touch widget, load a snapshot, then hide v5 touch widget at this point mixer controls work, unhide v5 touch widget and then widget buttons are unresponsive, the mixer controls work until main is selected, then mixer is also unresponsive.

I think others zynthianers with custom builds have reported something similar.

I did all these testing with Gemini AI and follow the findings.

What’s your opinion about Gemini findings?

Report: RPi 5 System Deadlock on Vangelis Branch (I/O & Interrupt Saturation)

1. System Environment

Platform: Raspberry Pi 5 (RP1 Controller).
Zynthian Version: Vangelis (Branch).
Hardware Setup:
- Powered USB Hub connected to RPi 5.
- Arturia MiniFuse 2 (Audio Interface).
- SiS HID Touch Controller (ID 0457:0819).
Initial Comparison: System was stable under Oram (Stable). Instability/Deadlock triggers immediately after migration to Vangelis.

2. Methodology & Findings

Finding 1: USB Bus Saturation. Monitoring interrupts via cat /proc/interrupts | grep xhci revealed a severe imbalance in IRQ distribution across the RP1 buses.
- Observation: Almost all traffic was concentrated on xhci-hcd:usb2 (195,782 interrupts vs 1 on usb4), leading to dmesg warnings:
  
  Plaintext
```
[ 6.398025] xhci-hcd xhci-hcd.0: WARN: buffer overrun event for slot 6 ep 4 on endpoint
[ 1296.408672] retire_capture_urb: 222 callbacks suppressed
```
- Correction Attempt: Re-routing hardware to force load balancing across usb2 and usb4 successfully distributed interrupts (~281k on usb4, ~600 on usb2), yet the system still deadlocked upon snapshot loading. This proves the issue is not just physical port congestion, but a core software concurrency bug in Vangelis.
Finding 2: Snapshot-Triggered Deadlock. Loading a Snapshot triggers a complete system freeze. The failure is sequential and reproducible:
1. V5 Buttons become unresponsive: Physical input handling via the V5 driver fails first.
2. Mixer View Collapse: Attempting to open the “Main Mixer” triggers a GUI hang.
3. Total System Deadlock: The zynthian_main.py process tree hangs, resulting in an unresponsive UI and audio processing loop.
Finding 3: Resource Contention (HTOP Analysis). Analysis of htop during the hang shows a massive number of python3 (zynthian_main.py) child processes in S (Interruptible Sleep) or D (Uninterruptible I/O) state.
- Inference: The GUI thread performs synchronous blocking calls to query the status of audio engines (jalv, fluidsynth, linuxsampler) via the Mixer view. Under Vangelis, due to tighter bus timing or changed event-loop priorities, these calls are timing out or deadlocking, causing the GUI thread to wait indefinitely for an I/O response that never arrives.

3. Summary of Hypothesis

The instability in Vangelis on the RPi 5 appears to be a synchronous-to-asynchronous architecture conflict. The Snapshot process and Mixer view queries are likely blocking the main event loop while waiting for audio engine state updates that are delayed by the RP1 controller’s interrupt handling. Unlike Oram, which seems more tolerant of these latency spikes, Vangelis enters a deadlock state (likely a mutex lock or thread hang) when audio state queries are concurrent with high-traffic HID/Audio USB interrupts.

4. Recommendations for Developers

Audit Mixer Query Implementation: Investigate if the GUI thread is performing synchronous blocking calls to audio engine statuses. Implementing asynchronous queries (using asyncio or worker threads) may prevent the GUI from deadlocking.
Interrupt Handling on RP1: Review IRQ affinity/priority handling in the Vangelis kernel for the RP1 controller, as the system struggles to balance HID and Audio streams compared to previous generations.
V5 Driver Resilience: Determine why physical input drivers (V5 buttons) cease operation before the GUI freeze, as this suggests the event-polling loop is being starved by the Mixer’s blocking calls.

Best regards.

Aethermind · April 19, 2026, 4:26pm

Hi @smespresati,

As reported elsewhere, I also experienced GUI locks on Vangelis, on two touch and HDMI custom builds working nominally with Oram.

In my case, the system freezes as soon as I engage the chain manager view, letting me speculate - without being able to audit further the problem - that the issue might arise from the GUI management of the chain manager routines call, or from something internal to the chain manager code itself that reacts non-functionally to my HW setup.

Regards

riban · April 19, 2026, 4:48pm

I hope your problems are all cauesd by the same problem that we are trying to resolve - chain manager view does not close and overlays other screens, so the screens are working but you can’t see them. You can often use the back button in this scenario so maybe the issue is different. Anyone having problems should raise a ticket in the issue tracker, ideally using the webconf Report Issue button and attach logs. UI problems have oftern been caused by an exception with an associated lot entry.

smespresati · April 19, 2026, 6:54pm

Thanks @riban,

As it was a new custom build I thought it was my fault setting up my unofficial hardware.

I captured the log just when failing. I hope this will help you to manage the issue.

BTW, Vangelis is a nice work.

Best regards.

(venv) root@zynthian:/zynthian/zynthian-my-data/scripts# journalctl -u zynthian -n 200 --no-pager
Apr 19 19:42:19 zynthian startx[52699]: Hardware Model: Raspberry Pi 5 Model B Rev 1.1
Apr 19 19:42:19 zynthian startx[52699]: ----------------------------------------------
Apr 19 19:42:19 zynthian startx[52728]: Generating splash images for display resolution 1920 x 1280…
Apr 19 19:42:19 zynthian startx[52748]: /zynthian/config/img/fb_zynthian_boot.jpg is a 1920x1280 JPEG image, color space Grayscale, 1 comp, Huffman coding.
Apr 19 19:42:19 zynthian startx[52748]: Zooming image by 100%…done
Apr 19 19:42:19 zynthian startx[52748]: Merging…didn’t find evidence of prior run.
Apr 19 19:42:19 zynthian startx[52748]: done
Apr 19 19:42:19 zynthian startx[52748]: Building XImage…done
Apr 19 19:42:20 zynthian startx[52749]: Loaded libzynaudioplayer using libsndfile-1.2.0
Apr 19 19:42:21 zynthian startx[52749]: Started zynmixer_chan
Apr 19 19:42:21 zynthian startx[52749]: Started zynmixer_bus
Apr 19 19:42:21 zynthian startx[52749]: Started libzynseq
Apr 19 19:42:21 zynthian startx[52749]: Started libzynsmf
Apr 19 19:42:25 zynthian startx[52749]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 1, delay: 930.0us
Apr 19 19:42:25 zynthian startx[52749]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 2, delay: 37926.0us
Apr 19 19:42:56 zynthian startx[52749]: WARNING:zynthian_gui.busy_thread_task: Clients have been busy for longer than 30s: {‘add_processor’, ‘load snapshot’, ‘set_chain_state’, ‘ui startup’}
Apr 19 19:43:30 zynthian startx[52749]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 3, delay: 2893.0us
Apr 19 19:43:30 zynthian startx[52749]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 4, delay: 591.0us
Apr 19 19:43:30 zynthian startx[52749]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 5, delay: 1102.0us
Apr 19 19:43:30 zynthian startx[52749]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 6, delay: 1244.0us
Apr 19 19:43:30 zynthian startx[52749]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 7, delay: 327.0us
Apr 19 19:43:31 zynthian startx[52749]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 8, delay: 788.0us
Apr 19 19:43:32 zynthian startx[52749]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 9, delay: 97565.0us
Apr 19 19:43:56 zynthian systemd[1]: Stopping zynthian.service - Zynthian User Interface…
Apr 19 19:44:04 zynthian startx[52749]: ERROR:zynthian_chain_manager.remove_processor: Chain None doesn’t exist!
Apr 19 19:44:04 zynthian startx[52749]: zynmixer ended
Apr 19 19:44:04 zynthian startx[52749]: free(): invalid pointer
Apr 19 19:44:04 zynthian startx[52699]: ./zynthian.sh: line 316: 52749 Aborted ./zynthian_main.py
Apr 19 19:44:04 zynthian startx[52699]: *******************
Apr 19 19:44:04 zynthian startx[52699]: EXIT STATUS => 134
Apr 19 19:44:04 zynthian startx[52699]: *******************
Apr 19 19:44:04 zynthian startx[52664]: xinit: connection to X server lost
Apr 19 19:44:04 zynthian startx[52664]:
Apr 19 19:44:04 zynthian startx[52664]: waiting for X server to shut down
Apr 19 19:44:04 zynthian startx[52665]: (II) Server terminated successfully (0). Closing log file.
Apr 19 19:44:05 zynthian startx[52664]: xinit: unexpected signal 15
Apr 19 19:44:05 zynthian systemd[1]: zynthian.service: Main process exited, code=exited, status=1/FAILURE
Apr 19 19:44:05 zynthian systemd[1]: zynthian.service: Failed with result ‘exit-code’.
Apr 19 19:44:05 zynthian systemd[1]: Stopped zynthian.service - Zynthian User Interface.
Apr 19 19:44:05 zynthian systemd[1]: zynthian.service: Consumed 2min 9ms CPU time.
Apr 19 19:44:05 zynthian systemd[1]: Started zynthian.service - Zynthian User Interface.
Apr 19 19:44:05 zynthian startx[53638]: X.Org X Server 1.21.1.7
Apr 19 19:44:05 zynthian startx[53638]: X Protocol Version 11, Revision 0
Apr 19 19:44:05 zynthian startx[53638]: Current Operating System: Linux zynthian 6.12.47+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.12.47-1+rpt1~bookworm (2025-09-16) aarch64
Apr 19 19:44:05 zynthian startx[53638]: Kernel command line: reboot=w coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe cgroup_disable=memory numa_policy=interleave nvme.max_host_mem_size_mb=0 numa=fake=8 system_heap.max_order=0 iommu_dma_numa_policy=interleave smsc95xx.macaddr=88:A2:9E:0A:F9:9F vc_mem.mem_base=0x3fc00000 vc_mem.mem_size=0x40000000 root=PARTUUID=e249d476-02 rootfstype=ext4 fsck.repair=yes rootwait console=tty1 logo.nologo modules-load=dwc2,libcomposite
Apr 19 19:44:05 zynthian startx[53638]: xorg-server 2:21.1.7-3+rpt3+deb12u11 ( Debian -- User Support )
Apr 19 19:44:05 zynthian startx[53638]: Current version of pixman: 0.44.0
Apr 19 19:44:05 zynthian startx[53638]: Before reporting problems, check http://wiki.x.org
Apr 19 19:44:05 zynthian startx[53638]: to make sure that you have the latest version.
Apr 19 19:44:05 zynthian startx[53638]: Markers: (–) probed, () from config file, (==) default setting,
Apr 19 19:44:05 zynthian startx[53638]: (++) from command line, (!!) notice, (II) informational,
Apr 19 19:44:05 zynthian startx[53638]: (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
Apr 19 19:44:05 zynthian startx[53638]: (==) Log file: “/var/log/Xorg.0.log”, Time: Sun Apr 19 19:44:05 2026
Apr 19 19:44:05 zynthian startx[53638]: (==) Using config directory: “/etc/X11/xorg.conf.d”
Apr 19 19:44:05 zynthian startx[53638]: (==) Using system config directory “/usr/share/X11/xorg.conf.d”
Apr 19 19:44:06 zynthian startx[53650]: ----------------------------------------------
Apr 19 19:44:06 zynthian startx[53650]: Linux Version: bookworm
Apr 19 19:44:06 zynthian startx[53650]: Kernel Version: 6.12.47+rpt-rpi-2712
Apr 19 19:44:06 zynthian startx[53650]: ZynthianOS Version: 2601
Apr 19 19:44:06 zynthian startx[53650]: Virtualization: none
Apr 19 19:44:06 zynthian startx[53650]: Hardware Architecture: aarch64
Apr 19 19:44:06 zynthian startx[53650]: Hardware Model: Raspberry Pi 5 Model B Rev 1.1
Apr 19 19:44:06 zynthian startx[53650]: ----------------------------------------------
Apr 19 19:44:06 zynthian startx[53679]: /zynthian/config/img/fb_zynthian_boot.jpg is a 1920x1280 JPEG image, color space Grayscale, 1 comp, Huffman coding.
Apr 19 19:44:06 zynthian startx[53679]: Zooming image by 100%…done
Apr 19 19:44:06 zynthian startx[53679]: Merging…didn’t find evidence of prior run.
Apr 19 19:44:06 zynthian startx[53679]: done
Apr 19 19:44:06 zynthian startx[53679]: Building XImage…done
Apr 19 19:44:07 zynthian startx[53681]: Loaded libzynaudioplayer using libsndfile-1.2.0
Apr 19 19:44:07 zynthian startx[53681]: Started zynmixer_chan
Apr 19 19:44:07 zynthian startx[53681]: Started zynmixer_bus
Apr 19 19:44:07 zynthian startx[53681]: Started libzynseq
Apr 19 19:44:07 zynthian startx[53681]: Started libzynsmf
Apr 19 19:44:07 zynthian startx[53681]: ERROR:zynthian_state_manager.save_snapshot: Traceback (most recent call last):
Apr 19 19:44:07 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 1065, in save_snapshot
Apr 19 19:44:07 zynthian startx[53681]: state = self.get_state()
Apr 19 19:44:07 zynthian startx[53681]: ^^^^^^^^^^^^^^^^
Apr 19 19:44:07 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 966, in get_state
Apr 19 19:44:07 zynthian startx[53681]: self.save_zs3(“zs3-0”, “Last state”)
Apr 19 19:44:07 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 1616, in save_zs3
Apr 19 19:44:07 zynthian startx[53681]: “active_chain”: self.chain_manager.active_chain.chain_id,
Apr 19 19:44:07 zynthian startx[53681]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Apr 19 19:44:07 zynthian startx[53681]: AttributeError: ‘NoneType’ object has no attribute ‘chain_id’
Apr 19 19:44:07 zynthian startx[53681]: Traceback (most recent call last):
Apr 19 19:44:07 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 1065, in save_snapshot
Apr 19 19:44:07 zynthian startx[53681]: state = self.get_state()
Apr 19 19:44:07 zynthian startx[53681]: ^^^^^^^^^^^^^^^^
Apr 19 19:44:07 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 966, in get_state
Apr 19 19:44:07 zynthian startx[53681]: self.save_zs3(“zs3-0”, “Last state”)
Apr 19 19:44:07 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 1616, in save_zs3
Apr 19 19:44:07 zynthian startx[53681]: “active_chain”: self.chain_manager.active_chain.chain_id,
Apr 19 19:44:07 zynthian startx[53681]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Apr 19 19:44:07 zynthian startx[53681]: AttributeError: ‘NoneType’ object has no attribute ‘chain_id’
Apr 19 19:44:07 zynthian startx[53681]: ERROR:zynthian_state_manager.save_snapshot: Can’t save snapshot file ‘/zynthian/zynthian-my-data/snapshots/last_state.zss’: ‘NoneType’ object has no attribute ‘chain_id’
Apr 19 19:44:10 zynthian startx[53681]: ERROR:zynthian_state_manager.load_snapshot: Invalid snapshot: ‘zynthian_state_manager’ object has no attribute ‘main_mixbus_proc’
Apr 19 19:44:10 zynthian startx[53681]: Traceback (most recent call last):
Apr 19 19:44:10 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 1120, in load_snapshot
Apr 19 19:44:10 zynthian startx[53681]: self.mute(True)
Apr 19 19:44:10 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 353, in mute
Apr 19 19:44:10 zynthian startx[53681]: self.main_mixbus_proc.controllers_dict[“mute”].set_value(mute)
Apr 19 19:44:10 zynthian startx[53681]: ^^^^^^^^^^^^^^^^^^^^^
Apr 19 19:44:10 zynthian startx[53681]: AttributeError: ‘zynthian_state_manager’ object has no attribute ‘main_mixbus_proc’
Apr 19 19:44:12 zynthian startx[53681]: Traceback (most recent call last):
Apr 19 19:44:12 zynthian startx[53681]: File “/zynthian/zynthian-ui/./zynthian_main.py”, line 47, in
Apr 19 19:44:12 zynthian startx[53681]: zynthian_gui_config.zyngui = zyngui = zynthian_gui()
Apr 19 19:44:12 zynthian startx[53681]: ^^^^^^^^^^^^^^
Apr 19 19:44:12 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngui/zynthian_gui.py”, line 166, in init
Apr 19 19:44:12 zynthian startx[53681]: self.state_manager = zynthian_state_manager()
Apr 19 19:44:12 zynthian startx[53681]: ^^^^^^^^^^^^^^^^^^^^^^^^
Apr 19 19:44:12 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 191, in init
Apr 19 19:44:12 zynthian startx[53681]: self.start()
Apr 19 19:44:12 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 232, in start
Apr 19 19:44:12 zynthian startx[53681]: self.default_vncserver()
Apr 19 19:44:12 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 2428, in default_vncserver
Apr 19 19:44:12 zynthian startx[53681]: self.stop_vncserver(False)
Apr 19 19:44:12 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 2413, in stop_vncserver
Apr 19 19:44:12 zynthian startx[53681]: self.load_last_state_snapshot()
Apr 19 19:44:12 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 1320, in load_last_state_snapshot
Apr 19 19:44:12 zynthian startx[53681]: return self.load_snapshot(self.last_state_snapshot_fpath)
Apr 19 19:44:12 zynthian startx[53681]: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Apr 19 19:44:12 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 1247, in load_snapshot
Apr 19 19:44:12 zynthian startx[53681]: self.mute(mute, 0)
Apr 19 19:44:12 zynthian startx[53681]: File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 353, in mute
Apr 19 19:44:12 zynthian startx[53681]: self.main_mixbus_proc.controllers_dict[“mute”].set_value(mute)
Apr 19 19:44:12 zynthian startx[53681]: ^^^^^^^^^^^^^^^^^^^^^
Apr 19 19:44:12 zynthian startx[53681]: AttributeError: ‘zynthian_state_manager’ object has no attribute ‘main_mixbus_proc’
Apr 19 19:44:12 zynthian startx[53681]: zynmixer ended
Apr 19 19:44:12 zynthian startx[53681]: zynmixer ended
Apr 19 19:44:12 zynthian startx[53681]: libzynaudioplayer exiting
Apr 19 19:44:12 zynthian startx[53650]: *******************
Apr 19 19:44:12 zynthian startx[53650]: EXIT STATUS => 1
Apr 19 19:44:12 zynthian startx[53650]: *******************
Apr 19 19:44:12 zynthian startx[53737]: /zynthian/config/img/fb_zynthian_message.jpg is a 1920x1280 JPEG image, color space YCbCr, 3 comps, Huffman coding.
Apr 19 19:44:12 zynthian startx[53737]: Zooming image by 100%…done
Apr 19 19:44:12 zynthian startx[53737]: Merging…done
Apr 19 19:44:12 zynthian startx[53737]: Building XImage…done
Apr 19 19:44:23 zynthian startx[53742]: Loaded libzynaudioplayer using libsndfile-1.2.0
Apr 19 19:44:24 zynthian startx[53742]: Started zynmixer_chan
Apr 19 19:44:24 zynthian startx[53742]: Started zynmixer_bus
Apr 19 19:44:24 zynthian startx[53742]: Started libzynseq
Apr 19 19:44:24 zynthian startx[53742]: Started libzynsmf
Apr 19 19:45:47 zynthian systemd[1]: Stopping zynthian.service - Zynthian User Interface…
Apr 19 19:45:48 zynthian startx[53742]: ERROR:zynthian_chain_manager.remove_processor: Chain None doesn’t exist!
Apr 19 19:45:48 zynthian startx[53742]: zynmixer ended
Apr 19 19:45:49 zynthian startx[53742]: zynmixer ended
Apr 19 19:45:49 zynthian startx[53742]: libzynaudioplayer exiting
Apr 19 19:45:49 zynthian startx[53650]: *******************
Apr 19 19:45:49 zynthian startx[53650]: EXIT STATUS => 101
Apr 19 19:45:49 zynthian startx[53650]: *******************
Apr 19 19:45:49 zynthian startx[53637]: xinit: connection to X server lost
Apr 19 19:45:49 zynthian startx[53637]:
Apr 19 19:45:49 zynthian startx[53637]: waiting for X server to shut down
Apr 19 19:45:49 zynthian startx[53638]: (II) Server terminated successfully (0). Closing log file.
Apr 19 19:45:50 zynthian startx[53637]: xinit: unexpected signal 15
Apr 19 19:45:50 zynthian systemd[1]: zynthian.service: Main process exited, code=exited, status=1/FAILURE
Apr 19 19:45:50 zynthian systemd[1]: zynthian.service: Failed with result ‘exit-code’.
Apr 19 19:45:50 zynthian systemd[1]: Stopped zynthian.service - Zynthian User Interface.
Apr 19 19:45:50 zynthian systemd[1]: zynthian.service: Consumed 9.171s CPU time.
Apr 19 19:45:50 zynthian systemd[1]: Started zynthian.service - Zynthian User Interface.
Apr 19 19:45:50 zynthian startx[54042]: X.Org X Server 1.21.1.7
Apr 19 19:45:50 zynthian startx[54042]: X Protocol Version 11, Revision 0
Apr 19 19:45:50 zynthian startx[54042]: Current Operating System: Linux zynthian 6.12.47+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.12.47-1+rpt1~bookworm (2025-09-16) aarch64
Apr 19 19:45:50 zynthian startx[54042]: Kernel command line: reboot=w coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe cgroup_disable=memory numa_policy=interleave nvme.max_host_mem_size_mb=0 numa=fake=8 system_heap.max_order=0 iommu_dma_numa_policy=interleave smsc95xx.macaddr=88:A2:9E:0A:F9:9F vc_mem.mem_base=0x3fc00000 vc_mem.mem_size=0x40000000 root=PARTUUID=e249d476-02 rootfstype=ext4 fsck.repair=yes rootwait console=tty1 logo.nologo modules-load=dwc2,libcomposite
Apr 19 19:45:50 zynthian startx[54042]: xorg-server 2:21.1.7-3+rpt3+deb12u11 ( Debian -- User Support )
Apr 19 19:45:50 zynthian startx[54042]: Current version of pixman: 0.44.0
Apr 19 19:45:50 zynthian startx[54042]: Before reporting problems, check http://wiki.x.org
Apr 19 19:45:50 zynthian startx[54042]: to make sure that you have the latest version.
Apr 19 19:45:50 zynthian startx[54042]: Markers: (–) probed, () from config file, (==) default setting,
Apr 19 19:45:50 zynthian startx[54042]: (++) from command line, (!!) notice, (II) informational,
Apr 19 19:45:50 zynthian startx[54042]: (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
Apr 19 19:45:50 zynthian startx[54042]: (==) Log file: “/var/log/Xorg.0.log”, Time: Sun Apr 19 19:45:50 2026
Apr 19 19:45:50 zynthian startx[54042]: (==) Using config directory: “/etc/X11/xorg.conf.d”
Apr 19 19:45:50 zynthian startx[54042]: (==) Using system config directory “/usr/share/X11/xorg.conf.d”
Apr 19 19:45:50 zynthian startx[54051]: ----------------------------------------------
Apr 19 19:45:50 zynthian startx[54051]: Linux Version: bookworm
Apr 19 19:45:50 zynthian startx[54051]: Kernel Version: 6.12.47+rpt-rpi-2712
Apr 19 19:45:50 zynthian startx[54051]: ZynthianOS Version: 2601
Apr 19 19:45:50 zynthian startx[54051]: Virtualization: none
Apr 19 19:45:50 zynthian startx[54051]: Hardware Architecture: aarch64
Apr 19 19:45:50 zynthian startx[54051]: Hardware Model: Raspberry Pi 5 Model B Rev 1.1
Apr 19 19:45:50 zynthian startx[54051]: ----------------------------------------------
Apr 19 19:45:50 zynthian startx[54080]: /zynthian/config/img/fb_zynthian_boot.jpg is a 1920x1280 JPEG image, color space Grayscale, 1 comp, Huffman coding.
Apr 19 19:45:50 zynthian startx[54080]: Zooming image by 100%…done
Apr 19 19:45:50 zynthian startx[54080]: Merging…didn’t find evidence of prior run.
Apr 19 19:45:50 zynthian startx[54080]: done
Apr 19 19:45:50 zynthian startx[54080]: Building XImage…done
Apr 19 19:45:51 zynthian startx[54082]: Loaded libzynaudioplayer using libsndfile-1.2.0
Apr 19 19:45:52 zynthian startx[54082]: Started zynmixer_chan
Apr 19 19:45:52 zynthian startx[54082]: Started zynmixer_bus
Apr 19 19:45:52 zynthian startx[54082]: Started libzynseq
Apr 19 19:45:52 zynthian startx[54082]: Started libzynsmf
Apr 19 19:45:52 zynthian startx[54082]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 1, delay: 370.0us
Apr 19 19:45:52 zynthian startx[54082]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 2, delay: 1211.0us
Apr 19 19:45:52 zynthian startx[54082]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 3, delay: 39208.0us
Apr 19 19:45:52 zynthian startx[54082]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 4, delay: 40388.0us
Apr 19 19:46:18 zynthian startx[54082]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 5, delay: 2945.0us
Apr 19 19:46:18 zynthian startx[54082]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 6, delay: 100018.0us
Apr 19 19:46:18 zynthian startx[54082]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 7, delay: 100018.0us
Apr 19 19:46:18 zynthian startx[54082]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 8, delay: 100018.0us
Apr 19 19:46:18 zynthian startx[54082]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 9, delay: 100018.0us
(venv) root@zynthian:/zynthian/zynthian-my-data/scripts#

smespresati · April 24, 2026, 12:48pm

A new update,

Just to be sure my usb soundcard is not causing the issue I installed a Hifiberry DAC+ ADC PRO and the issue is still there. I don’t know if this will help isolating/fixing the problem.

My testing hardware now is: Pi 5, Hifiberry DAC+ ADC PRO, Touchscreen Minis SF10T.

If there are some testing I can do to help isolating, I’ll do it.

Best regards.

tunagenes · April 24, 2026, 8:22pm

@smespresati - Could you report whether the back button works so we can tell whether the issue is different.

smespresati · April 25, 2026, 8:01am

Hi @riban,

Once the gui freezes I rekon back button does nothing. I’ll try it later this afternoon to confirm that. If I’m not wrong the only thing I can do with the gui is unhide/hide v5 touch kepad.

Best regards.

Aethermind · April 25, 2026, 8:13am

Hi @tunagenes and @riban,

Regarding the @smespresati’s experienced issue, in my case of frozen UI the whole lot of controls becomes unresponsive, including physical and virtual buttons. The only performable action remains moving the cursor, either on the touchscreen or through the mouse.

Best regards

smespresati · April 25, 2026, 3:38pm

Well, I did the testing. I made a video to show what exactly happens. As @Aethermind mentioned above, when UI is frozen cursor is alive and follows the finger.

Note that main chain can move volume bar, but when touching the “Main” name then the mixer gets frozen.

Jalv/Noize Mak3r
Apr 25 16:08:49 zynthian startx[53882]: DEBUG:zynthian_engine_jalv.start: Command: [‘jalv.gtk3’, ‘–jack-name’, ‘Noize_Mak3r-03’, ‘http://kunz.corrupt.ch/products/tal-noisemaker’\\\\\\]
Apr 25 16:08:50 zynthian startx[53882]: DEBUG:zynthian_chain_manager.add_processor: Adding processor ‘MI’ with ID ‘24’
Apr 25 16:08:50 zynthian startx[53882]: DEBUG:zynthian_chain_manager.add_processor: Adding processor ‘JV/Calf Compressor’ with ID ‘17’
Apr 25 16:08:50 zynthian startx[53882]: DEBUG:zynthian_engine_jalv.init: CREATING JALV ENGINE => Calf_Compressor-01
Apr 25 16:08:50 zynthian startx[53882]: INFO:zynthian_engine_jalv.get_lv2_controllers_dict: Getting Controller List from LV2 Plugin …
Apr 25 16:08:50 zynthian startx[53882]: INFO:zynthian_engine_jalv.start: Starting Engine Jalv/Calf Compressor
Apr 25 16:08:50 zynthian startx[53882]: DEBUG:zynthian_engine_jalv.start: Command: [‘jalv.gtk3’, ‘–jack-name’, ‘Calf_Compressor-01’, ‘http://calf.sourceforge.net/plugins/Compressor’\\\\\\]
Apr 25 16:08:51 zynthian startx[53882]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 1, delay: 113.0us
Apr 25 16:08:51 zynthian startx[53882]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 2, delay: 145.0us
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 3, delay: 28776.0us
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 15 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_engine_linuxsampler._get_preset_list: Getting Preset List for SFZ/Drum Machines
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 41 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.set_preset: Preset selected: Roland TR909 (27)
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_engine_sfz.load_yaml_config: Yaml config file ‘/zynthian/zynthian-data/soundfonts/sfz/Drum Machines/Roland TR909.yml’ not found
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_engine_sfz.load_yaml_config: Yaml config file ‘/zynthian/zynthian-data/soundfonts/sfz/Drum Machines/common.yml’ not found
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_engine_sfz.get_controllers_dict: Custom Controllers =>
Apr 25 16:08:52 zynthian startx[53882]:
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_engine_sfz.get_controllers_dict: Custom Controller Screens =>
Apr 25 16:08:52 zynthian startx[53882]:
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘modulation wheel’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘sustain’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘sostenuto’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘legato’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘breath’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘portamento on/off’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘portamento time-coarse’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘portamento time-fine’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘filter cutoff’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘filter resonance’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘env. attack’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘env. release’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘modulation wheel’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘sustain’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘sostenuto’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘legato’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘breath’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘portamento on/off’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘portamento time-coarse’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘portamento time-fine’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘filter cutoff’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘filter resonance’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘env. attack’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 1#LinuxSampler: ‘env. release’
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 1 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 23 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 64 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.set_preset: Preset selected: EBMRQBass - 01 (26)
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 2#Obxd: ‘sustain pedal’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 2#Obxd: ‘sustain pedal’
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 274 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.set_preset: Preset selected: SF Brass Portamento (227)
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 3#Helm: ‘sustain pedal’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 3#Helm: ‘sustain pedal’
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 1 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 23 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 128 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.set_preset: Preset selected: BzSYN Might as well (37)
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 4#Obxd: ‘sustain pedal’
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_processor.set_state: Invalid controller for processor 4#Obxd: ‘sustain pedal’
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 1 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 10 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.set_preset: Preset selected: 80er Plate (0)
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 347 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.set_preset: Preset selected: FX S-chained rise 4 s/l (194)
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 347 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.set_preset: Preset selected: LD Pleutonium FN (285)
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 347 presets
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.set_preset: Preset selected: DR Crash Space TAL (121)
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.load_preset_list: Loaded 1 presets
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG Noize_Mak3r-01 > error: Preset control lv2_port_1': doesn't exist! Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_engine_jalv.proc_poll_parse_line: LOG Noize_Mak3r-01 > error: Preset control lv2_port_71’: doesn’t exist!
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 0 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 0 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 0 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 0 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 0 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 0 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 0 banks
Apr 25 16:08:52 zynthian startx[53882]: INFO:zynthian_processor.get_bank_list: Loaded 0 banks
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#1 => 0:modulation wheel
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_chain_manager.add_midi_learn: (chan=255, midi_cc=7, zctrl=volume, zmip=None)
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_chain_manager.add_midi_learn: (chan=255, midi_cc=10, zctrl=pan, zmip=None)
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_chain_manager.add_midi_learn: (chan=255, midi_cc=11, zctrl=expression, zmip=None)
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#64 => 0:sustain
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#66 => 0:sostenuto
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#68 => 0:legato
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#2 => 0:breath
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#65 => 0:portamento on/off
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#5 => 0:portamento time-coarse
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#37 => 0:portamento time-fine
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#74 => 0:filter cutoff
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#71 => 0:filter resonance
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#73 => 0:env. attack
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#72 => 0:env. release
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_chain_manager.add_midi_learn: (chan=255, midi_cc=1, zctrl=modulation wheel, zmip=None)
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#64 => 1:sustain pedal
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#64 => 2:sustain pedal
Apr 25 16:08:52 zynthian startx[53882]: DEBUG:zynthian_chain_manager.add_midi_learn: (chan=255, midi_cc=1, zctrl=modulation wheel, zmip=None)
Apr 25 16:08:52 zynthian startx[53882]: WARNING:zynthian_state_manager.load_zs3: Failed to restore MIDI learning 255#64 => 4:sustain pedal
Apr 25 16:08:53 zynthian startx[53882]: DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY => [‘add_chain’, ‘snapshot’]
Apr 25 16:08:53 zynthian startx[53882]: DEBUG:zynthian_gui.prune_screen_history: PRUNE ‘loading’ FROM SCREEN HISTORY => [‘add_chain’, ‘snapshot’]
Apr 25 16:08:53 zynthian startx[53882]: DEBUG:zynthian_gui.close_screen: CLOSE SCREEN ‘loading’ => Back to ‘snapshot’
Apr 25 16:08:53 zynthian startx[53882]: DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY => [‘mixer’]
Apr 25 16:08:53 zynthian startx[53882]: DEBUG:zynthian_gui.prune_screen_history: PRUNE ‘snapshot’ FROM SCREEN HISTORY => [‘mixer’]
Apr 25 16:08:57 zynthian startx[53882]: DEBUG:zynthian_gui.zynswitch_short: Short Switch 5
Apr 25 16:08:57 zynthian startx[53882]: DEBUG:zynthian_gui.callable_ui_action: CUIA ‘SCREEN_AUDIO_MIXER’ => None
Apr 25 16:09:26 zynthian startx[53882]: DEBUG:zynthian_gui.zynswitch_short: Short Switch 4
Apr 25 16:09:26 zynthian startx[53882]: DEBUG:zynthian_gui.callable_ui_action: CUIA ‘MENU’ => None
Apr 25 16:10:10 zynthian startx[53851]: ./zynthian.sh: line 316: 53882 User defined signal 2 ./zynthian_main.py
Apr 25 16:10:10 zynthian startx[53851]: *******************
Apr 25 16:10:10 zynthian startx[53851]: EXIT STATUS => 140
Apr 25 16:10:10 zynthian startx[53851]: *******************
Apr 25 16:10:10 zynthian startx[54539]: /zynthian/config/img/fb_zynthian_message.jpg is a 1920x1280 JPEG image, color space YCbCr, 3 comps, Huffman coding.
Apr 25 16:10:10 zynthian startx[54539]: Zooming image by 100%…done
Apr 25 16:10:10 zynthian startx[54539]: Merging…done
Apr 25 16:10:10 zynthian startx[54539]: Building XImage…done
Apr 25 16:10:20 zynthian startx[54543]: INFO:zynthian_gui_config.: ZYNTHIAN-UI CONFIG …
Apr 25 16:10:20 zynthian startx[54543]: INFO:zynthian_gui_config.: Kit Version: Custom
Apr 25 16:10:20 zynthian startx[54543]: INFO:zynthian_gui_config.: Wiring Layout: TOUCH_ONLY
Apr 25 16:10:20 zynthian startx[54543]: DEBUG:zynthian_gui_config.: TOUCH NAVIGATION = v5_keypad_left
Apr 25 16:10:20 zynthian startx[54543]: DEBUG:PngImagePlugin.call: STREAM b’IHDR’ 16 13
Apr 25 16:10:20 zynthian startx[54543]: DEBUG:PngImagePlugin.call: STREAM b’bKGD’ 41 6
Apr 25 16:10:20 zynthian startx[54543]: DEBUG:PngImagePlugin._open: b’bKGD’ 41 6 (unknown)
Apr 25 16:10:20 zynthian startx[54543]: DEBUG:PngImagePlugin.call: STREAM b’pHYs’ 59 9
Apr 25 16:10:20 zynthian startx[54543]: DEBUG:PngImagePlugin.call: STREAM b’tIME’ 80 7
Apr 25 16:10:20 zynthian startx[54543]: DEBUG:PngImagePlugin._open: b’tIME’ 80 7 (unknown)
Apr 25 16:10:20 zynthian startx[54543]: DEBUG:PngImagePlugin.call: STREAM b’IDAT’ 99 8192
Apr 25 16:10:21 zynthian startx[54543]: DEBUG:zynthian_lv2.load_engines: Loaded engine config with timestamp: 1777110768.0256567
Apr 25 16:10:21 zynthian startx[54543]: Loaded libzynaudioplayer using libsndfile-1.2.0
Apr 25 16:10:21 zynthian startx[54543]: INFO:zynthian_engine_audioplayer.zynthian_engine_audioplayer: Supported Audio Codecs: [‘aiff’, ‘aifc’, ‘au’, ‘caf’, ‘flac’, ‘mp3’, ‘vox’, ‘opus’, ‘ogg’, ‘wav’]
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_main.: STARTING ZYNTHIAN-UI …
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_state_manager.init: Creating state manager
Apr 25 16:10:22 zynthian startx[54543]: Started zynmixer_chan
Apr 25 16:10:22 zynthian startx[54543]: Started zynmixer_bus
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_chain_manager.init: Creating chain manager
Apr 25 16:10:22 zynthian startx[54543]: Started libzynseq
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_chain_manager.add_processor: Adding processor ‘MX’ with ID ‘-2’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_engine_alsa_mixer.get_controllers_dict: MIXER CTRL LIST: [‘Digital_0’, ‘PGA_Gain_Left’, ‘Digital_1’, ‘PGA_Gain_Right’, ‘ADC_Left_Input’, ‘ADC_Right_Input’]
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_chain_manager.add_processor: Adding processor ‘TP’ with ID ‘-4’
Apr 25 16:10:22 zynthian startx[54543]: Started libzynsmf
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_state_manager.start: Opened temperature sensor ‘/sys/class/hwmon/hwmon0/temp1_input’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_state_manager.start: Opened undervoltage sensor ‘/sys/class/hwmon/hwmon2/in0_lcrit_alarm’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_chain_manager.add_chain: ADDED CHAIN 0 => midi_chan=None, zmop_index=None
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_akai_apc_key25_mk2_sooperlooper’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_sinco_smk25_bt’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_arturia_keylab_61_mk2’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_akai_apc_key25’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_akai_apc_key25_sooperlooper’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchkey_mini_mk3’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchpad_x’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_mackiecontrol’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_behringer_motor’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_riband’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchkey_mk4_37’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_akai_midimix’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_akai_mpk_mini_mk3_moder’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_sinco_smk25’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_akai_apc_40_mk2’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchpad_pro_mk3’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_teenageengineering_op1’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchkey_mini_mk4_37’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_fostex_mixtab’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_duopiano’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchpad_pro_mk2’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_akai_mpk_mini_mk3’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_worlde_mini_moder’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchpad_mini_mk3’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_korg_nanokontrol2’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchpad_mini’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_akai_apc_key25_mk2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_apc_key25_mk2_sooperlooper’ for devices with ID ‘APC Key 25 mk2 MIDI 2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_apc_key25_mk2_sooperlooper’ for devices with ID ‘APC Key 25 mk2 IN 2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_sinco_smk25_bt’ for devices with ID ‘SMK25V2 IN’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_arturia_keylab_61_mk2’ for devices with ID ‘KeyLab mkII 61 IN 2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_apc_key25’ for devices with ID ‘APC Key 25 MIDI 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_apc_key25’ for devices with ID ‘APC Key 25 IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_apc_key25_sooperlooper’ for devices with ID ‘APC Key 25 MIDI 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_apc_key25_sooperlooper’ for devices with ID ‘APC Key 25 IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchkey_mini_mk3’ for devices with ID ‘Launchkey Mini MK3 IN 2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchpad_x’ for devices with ID ‘Launchpad X IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_mackiecontrol’ for devices with ID ‘’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_behringer_motor’ for devices with ID ‘MOTÖR61 Keyboard IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_behringer_motor’ for devices with ID ‘MOTÖR49 Keyboard IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_riband’ for devices with ID ‘riband Bluetooth’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchkey_mk4_37’ for devices with ID ‘Launchkey MK4 37 DAW In’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchkey_mk4_37’ for devices with ID ‘Launchkey MK4 37 IN 2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_midimix’ for devices with ID ‘MIDI Mix IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_mpk_mini_mk3_moder’ for devices with ID ‘MPK mini 3 IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_sinco_smk25’ for devices with ID ‘SINCO IN 2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_apc_40_mk2’ for devices with ID ‘APC40 mkII IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchpad_pro_mk3’ for devices with ID ‘Launchpad Pro MK3 IN 3’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_teenageengineering_op1’ for devices with ID ‘OP-1 IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchkey_mini_mk4_37’ for devices with ID ‘Launchkey Mini MK4 37 IN 2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_fostex_mixtab’ for devices with ID '’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_duopiano’ for devices with ID ‘GENERAL IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchpad_pro_mk2’ for devices with ID ‘Launchpad Pro IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_mpk_mini_mk3’ for devices with ID ‘MPK mini 3 IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_worlde_mini_moder’ for devices with ID ‘WORLDE MINI IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchpad_mini_mk3’ for devices with ID ‘Launchpad Mini MK3 IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_korg_nanokontrol2’ for devices with ID ‘nanoKONTROL2 IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchpad_mini’ for devices with ID ‘Launchpad Mini IN 1’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_apc_key25_mk2’ for devices with ID ‘APC Key 25 mk2 MIDI 2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_akai_apc_key25_mk2’ for devices with ID ‘APC Key 25 mk2 IN 2’
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_autoconnect.init: Initializing 27 slots for MIDI input devices
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_autoconnect.init: Initializing 24 slots for MIDI output devices
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_chain_manager.add_processor: Adding processor ‘MR’ with ID ‘-1’
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 0: ttymidi:MIDI_in
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 0: ttymidi:MIDI_out
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 1: ZynMaster:midi_in
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 2: ZynMidiRouter:seq_in
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:zynthian_chain_manager.add_processor: Adding processor ‘AP’ with ID ‘-3’
Apr 25 16:10:22 zynthian startx[54543]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 1, delay: 11.0us
Apr 25 16:10:22 zynthian startx[54543]: INFO:zynthian_state_manager.set_power_save_mode: Power Save Mode: OFF
Apr 25 16:10:22 zynthian startx[54543]: DEBUG:selector_events.init: Using selector: EpollSelector
Apr 25 16:10:23 zynthian startx[54543]: DEBUG:zynthian_gui_brightness_config.get_backlight_sysctrl_fpath: Can’t find a display brightness control file
Apr 25 16:10:23 zynthian startx[54543]: INFO:zynthian_gui_brightness_config.init_ctrls: Setting LED brightness to 1.0.
Apr 25 16:10:23 zynthian startx[54543]: INFO:zynthian_gui.zynswitches_init: INIT 28 ZYNSWITCHES …
Apr 25 16:10:23 zynthian startx[54543]: INFO:zynthian_gui.osc_init: ZYNTHIAN-UI OSC server running in port 1370
Apr 25 16:10:23 zynthian startx[54543]: DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY =>
Apr 25 16:10:23 zynthian startx[54543]: DEBUG:zynthian_gui.prune_screen_history: PRUNE ‘loading’ FROM SCREEN HISTORY =>
Apr 25 16:10:23 zynthian startx[54543]: DEBUG:zynthian_gui.close_screen: CLOSE SCREEN ‘loading’ => Back to ‘root’
Apr 25 16:10:23 zynthian startx[54543]: DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY =>
Apr 25 16:10:23 zynthian startx[54543]: DEBUG:zynthian_gui.prune_screen_history: PRUNE ‘mixer’ FROM SCREEN HISTORY =>

Aethermind · April 26, 2026, 6:22am

Interesting @smespresati: your reported behaviour is very close to mine, except in my case happens as soon as OPT in the keypad overlay or Chain Manager in the Options view (through bold press in the top bar) are engaged, irrespective of using a touchscreen or a mouse on an hdmi screen. As already pointed out, this would appear to be related to something in the Chain Manager and Options call, or in the implementation of their UI, but only in relationship with specific DIY hardware setups, since other custom installations don’t seem to be affected by the same issue.

Regards

smespresati · April 27, 2026, 4:01am

Hi, I realized that when zynthian loads even without any snapshot (load last state unchecked), if the very first thing you do is touch OPT button, then keypad gets frozen. If you touch any other keypad button then it works as expected, until you touch OPT.

Muy testing custom build is: pi 5 8GB, hifiberry adac+ dac pro, touchscreen hdmi+USB Minix SF10T, boot from sd. Only the toucscreen is the hardware not supported.

At this point I wonder:

V5 official kit behaves this way when using touch navigation? I’m assuming that physical switches works as expected, otherwise Vangelis would be useless.
Does some custom build works properly? For instance, does DSi displays works? Or, are there some USB touch interface that works?

I have the feeling it’s not hardware related, but I cannot believe software can behaves so differently depending on the hardware. Once the OPT button triggers the proper action, I guess the subsequent processes should be the same.

Best regards.

Aethermind · April 27, 2026, 5:27am

The point is exactly that V 5.1 works just fine (other occasional testing glitches aside, of course) with Vangelis, with none of the OPT-related GUI issues that the two of us have experienced on custom builds. I tend to think instead that the Chain Manager problem might be, somehow, hardware-related, depending specifically on certain HDMI driver implementations, but I haven’t had the chance of comparing the behaviour of a DSI build. There seem to be other DIY setups, like @wyleu’s, that run properly the Vangelis GUI.

smespresati · April 27, 2026, 6:57am

The point is this exact hardware setup works with Oram. This leads me to think that hardware is OK. Does Vangelis use differently the hardware than Oram does? I don’ think that. Perhaps our developers can enlighten a bit the way things work in Oram in order we can progress in finding a solution to our specific issue.

Best regards.

jofemodo · April 27, 2026, 6:59am

Hi guys!

Please, try to catch the UI logs when the error happens. You don’t need to send all the logs, just the fragment with the error.

Thanks

Aethermind · April 27, 2026, 7:13am

Hi @jofemodo

I seem to remember that the GUI log shows nothing when the freeze event occurs, but I will check again and get back here!

Regards

Aethermind · April 27, 2026, 7:15am

Same here

smespresati · April 27, 2026, 8:50am

Hi, this is the last messages in UI log in debug mode. At this point UI is frozen and nothing more is logged despite of I’m touching the display.

I know now how to exactly reproduce the issue: as soon as I short touch OPT/ADMIN (I mean OPT)…or I touch Main chain to select it (level bar works) then UI freezes. Surprisingly (for me) when zynthian has just loaded and the UI works, touching Main chain to select it, most of the time freezes de UI but nothing is logged in the UI logs.

Apr 27 09:39:49 zynthian startx[1622]: INFO:zynthian_autoconnect.init: Initializing 27 slots for MIDI input devices
Apr 27 09:39:49 zynthian startx[1622]: INFO:zynthian_autoconnect.init: Initializing 24 slots for MIDI output devices
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_chain_manager.add_processor: Adding processor ‘MR’ with ID ‘-1’
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 0: system:midi_capture_1
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 1: system:midi_capture_2
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 2: system:midi_capture_3
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 3: system:midi_capture_4
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 4: ttymidi:MIDI_in
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 0: system:midi_playback_1
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 1: system:midi_playback_2
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 2: system:midi_playback_3
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 3: system:midi_playback_4
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 4: ttymidi:MIDI_out
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 5: ZynMaster:midi_in
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 6: ZynMidiRouter:seq_in
Apr 27 09:39:49 zynthian startx[1622]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 1, delay: 127.0us
Apr 27 09:39:49 zynthian startx[1622]: DEBUG:zynthian_chain_manager.add_processor: Adding processor ‘AP’ with ID ‘-3’
Apr 27 09:39:50 zynthian startx[1622]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 2, delay: 38039.0us
Apr 27 09:39:50 zynthian startx[1622]: INFO:zynthian_state_manager.set_power_save_mode: Power Save Mode: OFF
Apr 27 09:39:50 zynthian startx[1622]: DEBUG:selector_events._init_: Using selector: EpollSelector
Apr 27 09:39:50 zynthian startx[1622]: DEBUG:zynthian_gui_brightness_config.get_backlight_sysctrl_fpath: Can’t find a display brightness control file
Apr 27 09:39:50 zynthian startx[1622]: INFO:zynthian_gui_brightness_config.init_ctrls: Setting LED brightness to 1.0.
Apr 27 09:39:50 zynthian startx[1622]: INFO:zynthian_gui.zynswitches_init: INIT 28 ZYNSWITCHES …
Apr 27 09:39:50 zynthian startx[1622]: INFO:zynthian_gui.osc_init: ZYNTHIAN-UI OSC server running in port 1370
Apr 27 09:39:50 zynthian startx[1622]: DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY => []
Apr 27 09:39:50 zynthian startx[1622]: DEBUG:zynthian_gui.prune_screen_history: PRUNE ‘loading’ FROM SCREEN HISTORY => []
Apr 27 09:39:50 zynthian startx[1622]: DEBUG:zynthian_gui.close_screen: CLOSE SCREEN ‘loading’ => Back to ‘root’
Apr 27 09:39:50 zynthian startx[1622]: DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY => []
Apr 27 09:39:50 zynthian startx[1622]: DEBUG:zynthian_gui.prune_screen_history: PRUNE ‘mixer’ FROM SCREEN HISTORY => []
Apr 27 09:39:52 zynthian startx[1622]: DEBUG:zynthian_state_manager.update_thread: ************ CHECKING FOR UPDATES … ************
Apr 27 09:39:52 zynthian startx[1622]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 3, delay: 63.0us
Apr 27 09:39:57 zynthian startx[1622]: DEBUG:zynthian_gui.zynswitch_short: Short Switch 4
Apr 27 09:39:57 zynthian startx[1622]: DEBUG:zynthian_gui.callable_ui_action: CUIA ‘MENU’ => None

riban · April 27, 2026, 10:33am

I am using a Waveshare 5" DSI with no hardware switches or knobs and V5 button overlay enabled on a RPi5 using Vangelis. I do not experience loss of touch control if I tap the OPT button immediately after boot.

jofemodo · April 27, 2026, 10:58am

No error logs, so difficult to fix.
Anyway, no errors logged at UI level probably (not 100%, but close ;-)) means it’s not a problem with zynthian software. It could be a system software problem (lower level) or hardware related.

Have you tried to take a look to system logs?

Regards,

Aethermind · April 27, 2026, 2:36pm

Hi @jofemodo !

This is the UI log in debug mode on engaging Chain Manager, of my Pi5 8Gb + nvme + Waveshare 15.6” touch + Hifiberry DAC 8X Zynthian/Vangelis build.

There happens to be a potentially relevant WARNING, concerning

multitouch.\_process_touch_events

(see last log lines, highlighted with bold **)

Restarting UI in debug mode
Apr 27 15:18:09 zynthian systemd\[1\]: Started zynthian_debug.service - Zynthian User Interface (DEBUG).
Apr 27 15:18:09 zynthian startx\[4284\]: X.Org X Server 1.21.1.7
Apr 27 15:18:09 zynthian startx\[4284\]: X Protocol Version 11, Revision 0
Apr 27 15:18:09 zynthian startx\[4284\]: Current Operating System: Linux zynthian 6.12.75+rpt-rpi-2712 #1 SMP PREEMPT Debian 1:6.12.75-1+rpt1\~bookworm (2026-03-11) aarch64
Apr 27 15:18:09 zynthian startx\[4284\]: Kernel command line: reboot=w coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe cgroup_disable=memory numa_policy=interleave nvme.max_host_mem_size_mb=0 numa=fake=8 system_heap.max_order=0 iommu_dma_numa_policy=interleave smsc95xx.macaddr=2C:CF:67:00:B4:2A vc_mem.mem_base=0x3fc00000 vc_mem.mem_size=0x40000000 root=PARTUUID=e249d476-02 rootfstype=ext4 fsck.repair=yes rootwait console=tty1 logo.nologo modules-load=dwc2,libcomposite
Apr 27 15:18:09 zynthian startx\[4284\]: xorg-server 2:21.1.7-3+rpt3+deb12u11 ( https://www.debian.org/support )
Apr 27 15:18:09 zynthian startx\[4284\]: Current version of pixman: 0.44.0
Apr 27 15:18:09 zynthian startx\[4284\]: Before reporting problems, check http://wiki.x.org
Apr 27 15:18:09 zynthian startx\[4284\]: to make sure that you have the latest version.
Apr 27 15:18:09 zynthian startx\[4284\]: Markers: (--) probed, (\*\*) from config file, (==) default setting,
Apr 27 15:18:09 zynthian startx\[4284\]: (++) from command line, (!!) notice, (II) informational,
Apr 27 15:18:09 zynthian startx\[4284\]: (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
Apr 27 15:18:09 zynthian startx\[4284\]: (==) Log file: "/var/log/Xorg.0.log", Time: Mon Apr 27 15:18:09 2026
Apr 27 15:18:09 zynthian startx\[4284\]: (==) Using config directory: "/etc/X11/xorg.conf.d"
Apr 27 15:18:09 zynthian startx\[4284\]: (==) Using system config directory "/usr/share/X11/xorg.conf.d"
Apr 27 15:18:09 zynthian startx\[4292\]: ----------------------------------------------
Apr 27 15:18:09 zynthian startx\[4292\]: Linux Version: bookworm
Apr 27 15:18:09 zynthian startx\[4292\]: Kernel Version: 6.12.75+rpt-rpi-2712
Apr 27 15:18:09 zynthian startx\[4292\]: ZynthianOS Version: 2601
Apr 27 15:18:09 zynthian startx\[4292\]: Virtualization: none
Apr 27 15:18:09 zynthian startx\[4292\]: Hardware Architecture: aarch64
Apr 27 15:18:09 zynthian startx\[4292\]: Hardware Model: Raspberry Pi 5 Model B Rev 1.0
Apr 27 15:18:09 zynthian startx\[4292\]: ----------------------------------------------
Apr 27 15:18:09 zynthian startx\[4321\]: /zynthian/config/img/fb_zynthian_boot.jpg is a 1920x1080 JPEG image, color space Grayscale, 1 comp, Huffman coding.
Apr 27 15:18:09 zynthian startx\[4321\]: Zooming image by 100%...done
Apr 27 15:18:09 zynthian startx\[4321\]: Merging...didn't find evidence of prior run.
Apr 27 15:18:09 zynthian startx\[4321\]: done
Apr 27 15:18:09 zynthian startx\[4321\]: Building XImage...done
Apr 27 15:18:09 zynthian startx\[4323\]: INFO:zynthian_gui_config.<module>: ZYNTHIAN-UI CONFIG ...
Apr 27 15:18:09 zynthian startx\[4323\]: INFO:zynthian_gui_config.<module>: Kit Version: Custom
Apr 27 15:18:09 zynthian startx\[4323\]: INFO:zynthian_gui_config.<module>: Wiring Layout: TOUCH_ONLY
Apr 27 15:18:09 zynthian startx\[4323\]: DEBUG:zynthian_gui_config.<module>: TOUCH NAVIGATION = v5_keypad_left
Apr 27 15:18:10 zynthian startx\[4323\]: DEBUG:PngImagePlugin.call: STREAM b'IHDR' 16 13
Apr 27 15:18:10 zynthian startx\[4323\]: DEBUG:PngImagePlugin.call: STREAM b'bKGD' 41 6
Apr 27 15:18:10 zynthian startx\[4323\]: DEBUG:PngImagePlugin.\_open: b'bKGD' 41 6 (unknown)
Apr 27 15:18:10 zynthian startx\[4323\]: DEBUG:PngImagePlugin.call: STREAM b'pHYs' 59 9
Apr 27 15:18:10 zynthian startx\[4323\]: DEBUG:PngImagePlugin.call: STREAM b'tIME' 80 7
Apr 27 15:18:10 zynthian startx\[4323\]: DEBUG:PngImagePlugin.\_open: b'tIME' 80 7 (unknown)
Apr 27 15:18:10 zynthian startx\[4323\]: DEBUG:PngImagePlugin.call: STREAM b'IDAT' 99 8192
Apr 27 15:18:10 zynthian startx\[4323\]: DEBUG:zynthian_lv2.load_engines: Loaded engine config with timestamp: 1777299384.487595
Apr 27 15:18:11 zynthian startx\[4323\]: Loaded libzynaudioplayer using libsndfile-1.2.0
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_engine_audioplayer.zynthian_engine_audioplayer: Supported Audio Codecs: \['aiff', 'aifc', 'au', 'caf', 'flac', 'mp3', 'vox', 'opus', 'ogg', 'wav'\]
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_main.<module>: STARTING ZYNTHIAN-UI ...
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_state_manager.\__init_\_: Creating state manager
Apr 27 15:18:11 zynthian startx\[4323\]: Started zynmixer_chan
Apr 27 15:18:11 zynthian startx\[4323\]: Started zynmixer_bus
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_chain_manager.\__init_\_: Creating chain manager
Apr 27 15:18:11 zynthian startx\[4323\]: Started libzynseq
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_chain_manager.add_processor: Adding processor 'MX' with ID '-2'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_engine_alsa_mixer.get_controllers_dict: MIXER CTRL LIST: \[''\]
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_chain_manager.add_processor: Adding processor 'TP' with ID '-4'
Apr 27 15:18:11 zynthian startx\[4323\]: Started libzynsmf
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_state_manager.start: Opened temperature sensor '/sys/class/hwmon/hwmon0/temp1_input'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_state_manager.start: Opened undervoltage sensor '/sys/class/hwmon/hwmon4/in0_lcrit_alarm'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_chain_manager.add_chain: ADDED CHAIN 0 => midi_chan=None, zmop_index=None
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_akai_apc_key25_mk2_sooperlooper'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_sinco_smk25_bt'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_arturia_keylab_61_mk2'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_akai_apc_key25'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_akai_apc_key25_sooperlooper'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_launchkey_mini_mk3'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_launchpad_x'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_mackiecontrol'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_behringer_motor'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_riband'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_launchkey_mk4_37'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_akai_midimix'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_akai_mpk_mini_mk3_moder'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_sinco_smk25'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_akai_apc_40_mk2'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_launchpad_pro_mk3'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_teenageengineering_op1'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_launchkey_mini_mk4_37'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_fostex_mixtab'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_duopiano'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_launchpad_pro_mk2'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_akai_mpk_mini_mk3'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_worlde_mini_moder'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_launchpad_mini_mk3'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_korg_nanokontrol2'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_launchpad_mini'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class 'zynthian_ctrldev_akai_apc_key25_mk2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_apc_key25_mk2_sooperlooper' for devices with ID 'APC Key 25 mk2 MIDI 2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_apc_key25_mk2_sooperlooper' for devices with ID 'APC Key 25 mk2 IN 2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_sinco_smk25_bt' for devices with ID 'SMK25V2 IN'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_arturia_keylab_61_mk2' for devices with ID 'KeyLab mkII 61 IN 2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_apc_key25' for devices with ID 'APC Key 25 MIDI 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_apc_key25' for devices with ID 'APC Key 25 IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_apc_key25_sooperlooper' for devices with ID 'APC Key 25 MIDI 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_apc_key25_sooperlooper' for devices with ID 'APC Key 25 IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_launchkey_mini_mk3' for devices with ID 'Launchkey Mini MK3 IN 2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_launchpad_x' for devices with ID 'Launchpad X IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_mackiecontrol' for devices with ID '\*'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_behringer_motor' for devices with ID 'MOTÖR61 Keyboard IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_behringer_motor' for devices with ID 'MOTÖR49 Keyboard IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_riband' for devices with ID 'riband Bluetooth'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_launchkey_mk4_37' for devices with ID 'Launchkey MK4 37 DAW In'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_launchkey_mk4_37' for devices with ID 'Launchkey MK4 37 IN 2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_midimix' for devices with ID 'MIDI Mix IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_mpk_mini_mk3_moder' for devices with ID 'MPK mini 3 IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_sinco_smk25' for devices with ID 'SINCO IN 2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_apc_40_mk2' for devices with ID 'APC40 mkII IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_launchpad_pro_mk3' for devices with ID 'Launchpad Pro MK3 IN 3'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_teenageengineering_op1' for devices with ID 'OP-1 IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_launchkey_mini_mk4_37' for devices with ID 'Launchkey Mini MK4 37 IN 2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_fostex_mixtab' for devices with ID '\*'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_duopiano' for devices with ID 'GENERAL IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_launchpad_pro_mk2' for devices with ID 'Launchpad Pro IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_mpk_mini_mk3' for devices with ID 'MPK mini 3 IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_worlde_mini_moder' for devices with ID 'WORLDE MINI IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_launchpad_mini_mk3' for devices with ID 'Launchpad Mini MK3 IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_korg_nanokontrol2' for devices with ID 'nanoKONTROL2 IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_launchpad_mini' for devices with ID 'Launchpad Mini IN 1'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_apc_key25_mk2' for devices with ID 'APC Key 25 mk2 MIDI 2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver 'zynthian_ctrldev_akai_apc_key25_mk2' for devices with ID 'APC Key 25 mk2 IN 2'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_autoconnect.init: Initializing 27 slots for MIDI input devices
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_autoconnect.init: Initializing 24 slots for MIDI output devices
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_chain_manager.add_processor: Adding processor 'MR' with ID '-1'
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 0: system:midi_capture_1
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 1: ttymidi:MIDI_in
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 0: system:midi_playback_1
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 1: ttymidi:MIDI_out
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 2: ZynMaster:midi_in
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 3: ZynMidiRouter:seq_in
Apr 27 15:18:11 zynthian startx\[4323\]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 1, delay: 31.0us
Apr 27 15:18:11 zynthian startx\[4323\]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! =>count: 2, delay: 34.0us
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:zynthian_chain_manager.add_processor: Adding processor 'AP' with ID '-3'
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:zynthian_state_manager.set_power_save_mode: Power Save Mode: OFF
Apr 27 15:18:11 zynthian startx\[4323\]: DEBUG:selector_events.\__init_\_: Using selector: EpollSelector
Apr 27 15:18:11 zynthian startx\[4323\]: INFO:multitouch.\_run: Starting multitouch on 'ILITEK ILITEK-TP'
Apr 27 15:18:12 zynthian startx\[4323\]: DEBUG:zynthian_gui_brightness_config.get_backlight_sysctrl_fpath: Can't find a display brightness control file
Apr 27 15:18:12 zynthian startx\[4323\]: INFO:zynthian_gui_brightness_config.init_ctrls: Setting LED brightness to 1.0.
Apr 27 15:18:12 zynthian startx\[4323\]: INFO:zynthian_gui.zynswitches_init: INIT 28 ZYNSWITCHES ...
Apr 27 15:18:12 zynthian startx\[4323\]: INFO:zynthian_gui.osc_init: ZYNTHIAN-UI OSC server running in port 1370
Apr 27 15:18:12 zynthian startx\[4323\]: DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY => \[\]
Apr 27 15:18:12 zynthian startx\[4323\]: DEBUG:zynthian_gui.prune_screen_history: PRUNE 'loading' FROM SCREEN HISTORY => \[\]
Apr 27 15:18:12 zynthian startx\[4323\]: DEBUG:zynthian_gui.close_screen: CLOSE SCREEN 'loading' => Back to 'root'
Apr 27 15:18:12 zynthian startx\[4323\]: INFO:zynthian_state_manager.load_snapshot: Loading snapshot '/zynthian/zynthian-my-data/snapshots/last_state.zss' ...
Apr 27 15:18:12 zynthian startx\[4323\]: DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY => \[\]
Apr 27 15:18:12 zynthian startx\[4323\]: DEBUG:zynthian_gui.prune_screen_history: PRUNE 'mixer' FROM SCREEN HISTORY => \[\]
Apr 27 15:18:12 zynthian startx\[4323\]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 27 15:18:12 zynthian startx\[4323\]: INFO:zynthian_processor.get_bank_list: Loaded 1 banks
Apr 27 15:18:12 zynthian startx\[4323\]: INFO:zynthian_processor.get_bank_list: Loaded 0 banks
Apr 27 15:18:12 zynthian startx\[4323\]: INFO:zynthian_processor.get_bank_list: Loaded 5 banks
Apr 27 15:18:13 zynthian startx\[4323\]: DEBUG:zynthian_state_manager.update_thread: \*\*\*\*\*\*\*\*\*\*\*\* CHECKING FOR UPDATES ... \*\*\*\*\*\*\*\*\*\*\*\*
Apr 27 15:18:29 zynthian startx\[4323\]: INFO:multitouch.\_run: Multitouch device ILITEK ILITEK-TP disconnected
**Apr 27 15:18:53 zynthian startx\[4323\]: INFO:multitouch.\_run: Starting multitouch on 'ILITEK ILITEK-TP'**
**Apr 27 15:18:53 zynthian startx\[4323\]: WARNING:multitouch.\_process_touch_events: 'Touch' object has no attribute 'x_root'**
**Apr 27 15:18:53 zynthian startx\[4323\]: WARNING:multitouch.\_process_touch_events: 'Touch' object has no attribute 'x_root'**
Apr 27 15:18:54 zynthian startx\[4323\]: DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY => \['mixer'\]
Apr 27 15:18:54 zynthian startx\[4323\]: DEBUG:zynthian_gui.prune_screen_history: PRUNE 'main_menu' FROM SCREEN HISTORY => \['mixer'\]

Don’t know if something in the LOG can shed light on the mystery!

All the best