LaunchPad Pro MK3 Can You Please explain what is wrong

Using Zynthian
1

Hello Everobody

Still trying to get my LaunchPad Pro MK3 working with Zynthian OS

I have made the following

thanks to jofemodo the ctrldriver is now talking to the right midi interface which i the 3rd

I have disabled the zynthian service and I run zynthian.sh in a ssh term window

Here is the log I get

========================================================================

(venv) root@zynthian:~# zynthian.sh

X.Org X Server 1.21.1.7
X Protocol Version 11, Revision 0
Current Operating System: Linux zynthian 6.12.47+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.47-1+rpt1~bookworm (2025-09-16) aarch64
Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_headphones=0 cgroup_disable=memory numa_policy=interleave nvme.max_host_mem_size_mb=0 snd_bcm2835.enable_headphones=1 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_headphones=1 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=720 bcm2708_fb.fbheight=576 bcm2708_fb.fbswap=1 numa=fake=2 system_heap.max_order=0 smsc95xx.macaddr=D8:3A:DD:F2:2D:E4 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 root=/dev/mmcblk0p2 rootfstype=ext4 fsck.repair=yes rootwait console=tty1 logo.nologo modules-load=dwc2,libcomposite
xorg-server 2:21.1.7-3+rpt3+deb12u11 ( Debian -- User Support )
Current version of pixman: 0.44.0
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Markers: (–) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: “/var/log/Xorg.0.log”, Time: Sat Jan 10 21:43:45 2026
(==) Using config directory: “/etc/X11/xorg.conf.d”
(==) Using system config directory “/usr/share/X11/xorg.conf.d”
/zynthian/config/img/fb_zynthian_boot.jpg is a 720x576 JPEG image, color space Grayscale, 1 comp, Huffman coding.
Zooming image by 100%
done
Merging
done
didn’t find evidence of prior run.
Building XImage
done
INFO:zynthian_gui_config.: ZYNTHIAN-UI CONFIG 

INFO:zynthian_gui_config.: Kit Version: Custom
INFO:zynthian_gui_config.: Wiring Layout: V5
DEBUG:PngImagePlugin.call: STREAM b’IHDR’ 16 13
DEBUG:PngImagePlugin.call: STREAM b’bKGD’ 41 6
DEBUG:PngImagePlugin._open: b’bKGD’ 41 6 (unknown)
DEBUG:PngImagePlugin.call: STREAM b’pHYs’ 59 9
DEBUG:PngImagePlugin.call: STREAM b’tIME’ 80 7
DEBUG:PngImagePlugin._open: b’tIME’ 80 7 (unknown)
DEBUG:PngImagePlugin.call: STREAM b’IDAT’ 99 8192
ZynCore: Setting-up 20+4 x Zynswitches

ZynCore: Setting-up 2 x Zynswitches in RBPi GPIO

ZynCore: Setting-up Zynpots => 4 x PEC11 

ZynCore->gpiod_start_callbacks: Callback thread created successfully
INFO:zynthian_gui_config.config_zynpot2switch: zynpot2switch => [24, 25, 26, 27]
DEBUG:zynthian_lv2.load_engines: Loaded engine config with timestamp: 1767965436.1228387
Loaded libzynaudioplayer using libsndfile-1.2.0
INFO:zynthian_engine_audioplayer.zynthian_engine_audioplayer: Supported Audio Codecs: [‘aiff’, ‘aifc’, ‘au’, ‘caf’, ‘flac’, ‘mp3’, ‘vox’, ‘opus’, ‘ogg’, ‘wav’]
INFO:zynthian_main.: STARTING ZYNTHIAN-UI 

INFO:zynthian_state_manager.init: Creating state manager
Started libzynmixer
INFO:zynthian_chain_manager.init: Creating chain manager
DEBUG:zynthian_engine_alsa_mixer.get_controllers_dict: MIXER CTRL LIST: [‘Headphone’]
DEBUG:zynthian_engine_alsa_mixer.get_controllers_dict: Added zyncore Headphones Amplifier volume control
Started libzynseq
Started libzynsmf
DEBUG:zynthian_state_manager.start: Opened temperature sensor ‘/sys/class/hwmon/hwmon0/temp1_input’
DEBUG:zynthian_state_manager.start: Opened undervoltage sensor ‘/sys/class/hwmon/hwmon1/in0_lcrit_alarm’
DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchpad_pro_mk3’
DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_launchpad_mini_mk3’
DEBUG:zynthian_ctrldev_manager.update_available_drivers: Loaded ctrldev driver class ‘zynthian_ctrldev_korg_nanokontrol2’
INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchpad_pro_mk3’ for devices with ID ‘Launchpad Pro MK3 IN 3’
INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_launchpad_mini_mk3’ for devices with ID ‘Launchpad Mini MK3 IN 1’
INFO:zynthian_ctrldev_manager.update_available_drivers: Found ctrldev driver ‘zynthian_ctrldev_korg_nanokontrol2’ for devices with ID ‘nanoKONTROL2 IN 1’
INFO:zynthian_autoconnect.init: Initializing 27 slots for MIDI input devices
INFO:zynthian_autoconnect.init: Initializing 24 slots for MIDI output devices
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 0: system:midi_capture_4
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 1: system:midi_capture_5
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 2: system:midi_capture_6
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-in device 3: ttymidi:MIDI_in
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 0: system:midi_playback_4
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 1: ttymidi:MIDI_out
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 2: system:midi_playback_5
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 3: system:midi_playback_6
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 4: ZynMaster:midi_in
DEBUG:zynthian_autoconnect.midi_autoconnect: Connected MIDI-out device 5: ZynMidiRouter:seq_in
INFO:zynthian_ctrldev_manager.load_driver: Loaded ctrldev driver ‘launchpad_pro_mk3’ for ‘Launchpad Pro MK3 IN 3’.
DEBUG:zynthian_chain_manager.add_chain: ADDED CHAIN 0 => midi_chan=None, mixer_chan=16, zmop_index=None
INFO:zynthian_state_manager.set_power_save_mode: Power Save Mode: OFF

DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!
DEBUG:zynthian_ctrldev_base.update_seq_state: Update sequence playing state for zynthian_ctrldev_launchpad_pro_mk3: NOT IMPLEMENTED!

DEBUG:selector_events.init: Using selector: EpollSelector
INFO:zynthian_gui_patterneditor.get_custom_keymap: MIDI channel 0 has not synth processors.
DEBUG:zynthian_gui_brightness_config.get_backlight_sysctrl_fpath: Can’t find a display brightness control file
INFO:zynthian_gui_brightness_config.init_ctrls: Setting LED brightness to 1.0.
INFO:zynthian_gui.zynswitches_init: INIT 30 ZYNSWITCHES 

INFO:zynthian_gui.wiring_midi_setup: CUSTOM I/O SETUP

INFO:zynthian_gui.osc_init: ZYNTHIAN-UI OSC server running in port 1370
DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY =>
DEBUG:zynthian_gui.prune_screen_history: PRUNE ‘loading’ FROM SCREEN HISTORY =>
DEBUG:zynthian_gui.close_screen: CLOSE SCREEN ‘loading’ => Back to ‘audio_mixer’
INFO:zynthian_state_manager.load_snapshot: Loading snapshot ‘/zynthian/zynthian-my-data/snapshots/last_state.zss’ 

INFO:zynseq.restore_riff_data: Restoring RIFF data


INFO:zynthian_gui.wiring_midi_setup: CUSTOM I/O SETUP

INFO:zynthian_processor.get_bank_list: Loaded 1 banks
DEBUG:zynthian_gui.prune_screen_history: SCREEN HISTORY =>
DEBUG:zynthian_gui.prune_screen_history: PRUNE ‘audio_mixer’ FROM SCREEN HISTORY =>
DEBUG:zynthian_state_manager.update_thread: ************ CHECKING FOR UPDATES 
 ************

==========================================================================

So something gets wrong when the 16 PADS of the LP ProMK3 try to get the state of the 16 Zynthian PADS

And when I try to use the buttons on the side of the LP and the arrows I get this error

=========================================================================

ERROR:zynthian_state_manager.zynmidi_read: zynthian_engine.set_bank() missing 1 required positional argument: ‘bank’
Traceback (most recent call last):
File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 746, in zynmidi_read
if self.ctrldev_manager.midi_event(izmip, ev):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/zynthian/zynthian-ui/zyngine/zynthian_ctrldev_manager.py”, line 250, in midi_event
return self.drivers[idev].midi_event(ev)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/zynthian/zynthian-ui/zyngine/ctrldev/zynthian_ctrldev_launchpad_pro_mk3.py”, line 148, in midi_event
self.zynseq.set_bank(row + 1)
TypeError: zynthian_engine.set_bank() missing 1 required positional argument: ‘bank’
ERROR:zynthian_state_manager.zynmidi_read: ‘zynthian_ctrldev_launchpad_pro_mk3’ object has no attribute ‘zyngui’
Traceback (most recent call last):
File “/zynthian/zynthian-ui/zyngine/zynthian_state_manager.py”, line 746, in zynmidi_read
if self.ctrldev_manager.midi_event(izmip, ev):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/zynthian/zynthian-ui/zyngine/zynthian_ctrldev_manager.py”, line 250, in midi_event
return self.drivers[idev].midi_event(ev)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “/zynthian/zynthian-ui/zyngine/ctrldev/zynthian_ctrldev_launchpad_pro_mk3.py”, line 144, in midi_event
self.zyngui.cuia_arrow_right()
^^^^^^^^^^^
AttributeError: ‘zynthian_ctrldev_launchpad_pro_mk3’ object has no attribute ‘zyngui’

=================================================================

Is it something that I can try to fix by myself or is it irremediably a dead end

Thank You for Reading

Alain

2

What zynthian hardware are you using? What version of zynthianOS are you using? What version is it updated to? You say you have made changes, but not shown those changes.

I would expect the driver provided with Oram to work out-of-the-box for this device without any changes, unless there has been a firmware change to the Launchpad which changes its behaviour. The Oram driver uses port 1 and you say it needs port 3 which suggests a difference in Launchpad firmware. What Launchpad firmware are you using.

I see you have other USB MIDI devices connected. It may be worth removing those whilst trying to debug issues.

Having said all of that
 I just looked at the source code of the Oram driver and I can’t see how it ever worked
 There is an event handler that is never triggered so the default prints out "“NOT IMPLEMENTED!”. The driver has @jofemodo and my names at the top but I don’t recognise having done any work on this driver. (I don’t own this device so would have not been able to do much beyond the skeleton / wireframe code.) This leads me to believe this driver may be incomplete and inadvertently included in the Oram release.

3

Okay

First of all , please excuse my poor english , I am French and will turn 70 yo next week


I have both LaunchPAD mini MK3 and LaunchPAD pro MK3

The LP mini MK3 works great ,so my assumption was that all the drivers in the zyngine/ctrldev were fully functionnal.

I then tried my LP pro MK3 anf there were 2 problems (more to follow)

the first one was

lib_zyncore.dev_send_midi_event(self.idev, msg, len(msg))

instead of

lib_zyncore.dev_send_midi_event(self.idev_out, msg, len(msg))

so jofemodo made the correction

the second one is that the LP pro MK3 uses the 3rd midi interface in DAW/Session mode

so I changed

dev_ids = [“Launchpad Pro MK3 IN 1”] by dev_ids = [“Launchpad Pro MK3 IN 3”]

so now the LP pro MK3 is able to go in DAW/Session mode

but after that nothing happens

About my setup

It is not an official kit

Raspberry Pi 4 Model B Rev 1.5
Audio: RBPi Headphones
Display: Generic HDMI/DSI Display
Wiring: V5
I2C: Not detected
Profile: v5

Debian GNU/Linux 12 (bookworm)
Build Date: 2025-11-05
Memory: 6% (483M/7820M)
Internal Storage: 29% (16G/57G ext4)
Temperature: 52.1ÂșC
Overclock: None

about the other USB devices , this is the ones I own (but they are not connected)

I have moved all other drivers that I do not need in the examples folder

==========================================================

I perfectly understand that it is impossible to work something as tricky as a driver for a device that you do not own ,

I do not know if the Universal sysex for device identification is used in the process

but since the driver for the LP mini MK3 works perfectly , is it possible to use it with some tweaks (changing sysex messages) and turn it into a LP pro MK3 driver

Anyway

Thank You

Alain

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