Hello and happy new year 
I have problems with the GUI in a headless configuration.
I try with a pisound and with a hifiberry dac+ and it’s the same, on my hdmi screen and via VNC.
As you can see, the knobs aren’t there. With the mouse, it’s impossible to change the values.
Also, the keyboard arrows down and up are really buggy.
Here’s some informations :
HARDWARE
Raspberry Pi 4 Model B Rev 1.4
Soundcard: HifiBerry DAC+
Display: Generic HDMI Display
Wiring: DUMMIES
GPIO Expander: Not detected
SYSTEM
Raspbian GNU/Linux 10 (buster)
Build Date: 2020-09-05
Memory: 2% (226M/7966M)
SD Card: 70% (9.3G/14G)
Temperature: 50.0ºC
MIDI
Profile: default.sh
Fine Tuning: 440 Hz
Master Channel: 16
Single Active Channel: on
ZS3 SubSnapShots: on
SOFTWARE
zyncoder: master (aa91afe)
zynthian-ui: master (2151f60)
zynthian-sys: master (dcf8d8a)
zynthian-data: master (336eadc)
zynthian-webconf: master (17b44ff)
LIBRARY
Snapshots: 4
User Presets: 6
User Soundfonts: 0
Audio Captures: 0
MIDI Captures: 0
NETWORK
Hostname: zynthian
Wifi: on
IP: 192.168.1.17
RTP-MIDI: off
QMidiNet: off
UI LOG
– Logs begin at Fri 2021-01-01 14:35:22 GMT. –
Jan 01 14:35:28 zynthian startx[495]: lilv_world_load_bundle(): note: New version 2071.11 found in <file:///zynthian/zynthian-plugins/lv2/b_whirl/>
Jan 01 14:35:28 zynthian startx[495]: lilv_world_load_bundle(): warning: Replacing version 2071.7 of http://gareus.org/oss/lv2/b_whirl#simple from <file:///zynthian/zynthian-plugins/lv2/b_whirl.lv2/>
Jan 01 14:35:28 zynthian startx[495]: lilv_world_load_bundle(): note: New version 2071.11 found in <file:///zynthian/zynthian-plugins/lv2/b_whirl/>
Jan 01 14:35:28 zynthian startx[495]: lilv_world_load_bundle(): warning: Ignoring bundle <file:///zynthian/zynthian-plugins/lv2/b_synth.lv2/>
Jan 01 14:35:28 zynthian startx[495]: lilv_world_load_bundle(): note: Newer version of http://gareus.org/oss/lv2/b_synth loaded from <file:///zynthian/zynthian-plugins/lv2/b_synth/>
Jan 01 14:35:29 zynthian startx[495]: libjackpeak registering as ‘jackpeak’.
Jan 01 14:35:29 zynthian startx[495]: libjackpeak created input ports
Jan 01 14:35:31 zynthian startx[495]: ERROR: PatternManager failed to open file for load /zynthian/zynthian-my-data/sequences/patterns.zynseq
Jan 01 14:36:05 zynthian startx[495]: ERROR:zynthian_engine_modui.get_controllers_dict: Generating Controller Screens: /graph/DubDelay => ‘ctrl’
Jan 01 14:36:05 zynthian startx[495]: WARNING:zynthian_engine.proc_get_output: Command Prompt is not defined!
Note that this morning, I also have (but it isn’t the case now) these logs :
– Logs begin at Thu 2019-02-14 10:11:58 GMT. –
Jan 01 11:47:01 zynthian startx[491]: File “./zynthian_gui.py”, line 862, in zynswitches
Jan 01 11:47:01 zynthian startx[491]: for i in range(len(zynthian_gui_config.zynswitch_pin)):
Jan 01 11:47:01 zynthian startx[491]: TypeError: object of type ‘NoneType’ has no len()
Jan 01 11:47:01 zynthian startx[491]: ERROR:zynthian_gui.zyncoder_read: object of type ‘NoneType’ has no len()
Jan 01 11:47:01 zynthian startx[491]: Traceback (most recent call last):
Jan 01 11:47:01 zynthian startx[491]: File “./zynthian_gui.py”, line 1171, in zyncoder_read
Jan 01 11:47:01 zynthian startx[491]: self.zynswitches()
Do someone have an idea of what’s append ?
Thanks