DIY Zynthian UI issue RPI 4B

Building Zynthian
1

Hi guys,

I’m working on a DIY Zynthian with the following elements.

Capture d’écran 2021-01-16 181817

However when I start the PI, it boots but fails to load the UI. I get the following info from the UI log. I have no clue where to go from there. Could you guys help me with me?

– Logs begin at Sat 2021-01-16 17:11:56 GMT. –
Jan 16 17:12:38 zynthian killall[1200]: zynthian_gui.py: no process found
Jan 16 17:12:38 zynthian systemd[1]: zynthian.service: Control process exited, code=exited, status=1/FAILURE
Jan 16 17:12:38 zynthian startx[1171]: xinit: giving up
Jan 16 17:12:38 zynthian startx[1171]: xinit: unable to connect to X server: Connection refused
Jan 16 17:12:38 zynthian startx[1171]: xinit: unexpected signal 15
Jan 16 17:12:38 zynthian systemd[1]: zynthian.service: Main process exited, code=exited, status=1/FAILURE
Jan 16 17:12:38 zynthian systemd[1]: zynthian.service: Failed with result ‘exit-code’.
Jan 16 17:12:38 zynthian systemd[1]: Stopped Zynthian User Interface.
Jan 16 17:12:38 zynthian systemd[1]: Dependency failed for Zynthian User Interface.
Jan 16 17:12:38 zynthian systemd[1]: zynthian.service: Job zynthian.service/start failed with result ‘dependency’.

2

Hi @WaNou, welcome.
Under the ssh console, check if jackd service is running. If not, Zynthian UI won’t start.
If yes, try to launch zynthianUI by hand:
from the ssh console run: /zynthian/zynthian-ui/zynthian.sh
and send the log messages here.

3

Here’s what I get… Keeps on like this indefinitely

root@zynthian:~# /zynthian/zynthian-ui/zynthian.sh
/zynthian/zynthian-ui/zynthian.sh: line 55: /sys/class/backlight/*/bl_power: No such file or directory
xset: unable to open display “”
xset: unable to open display “”
xset: unable to open display “”
ERROR:zynthian_gui_config.: Failed to configure geometry => no display name and no $DISPLAY environment variable
lilv_world_load_bundle(): warning: Replacing version 2071.7 of http://gareus.org/oss/lv2/b_whirl#extended from <file:///zynthian/zynthian-plugins/lv2/b_whirl.lv2/>
lilv_world_load_bundle(): note: New version 2071.11 found in <file:///zynthian/zynthian-plugins/lv2/b_whirl/>
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/>
lilv_world_load_bundle(): note: New version 2071.11 found in <file:///zynthian/zynthian-plugins/lv2/b_whirl/>
lilv_world_load_bundle(): warning: Ignoring bundle <file:///zynthian/zynthian-plugins/lv2/b_synth.lv2/>
lilv_world_load_bundle(): note: Newer version of http://gareus.org/oss/lv2/b_synth loaded from <file:///zynthian/zynthian-plugins/lv2/b_synth/>
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
libjackpeak failed to start jack client: 17
: Cannot open display

4

If you change the audio card settings to headphone in webconf ( if it runs) does it boot then?

5

Yep it does boot when I turn to rpbi headphones… Damn

6

I could just be a missing library. You are using an IQ card which isn’t typical, and I’ve had JALV missing which halted an Audio Injector start up. maybe similar.

7

Okay thanks for the tip, I’m gonna have to figure out how to proceed from here. I really am a noob…

8

It’s mostly reading error logs . . . But doing so very precisely.

something will be bleating.

9

I stopped the UI and started it again through PuTTY and here’s the error log I get…

root@zynthian:~#
root@zynthian:~# systemctl stop zynthian
root@zynthian:~# zynthian.sh

X.Org X Server 1.20.4
X Protocol Version 11, Revision 0
Build Operating System: Linux 4.15.0-99-generic armv8l Raspbian
Current Operating System: Linux zynthian 4.19.118-v7l+ #1311 SMP Mon Apr 27 14:26:42 BST 2020 armv7l
Kernel command line: coherent_pool=1M 8250.nr_uarts=1 cma=64M snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_headphones=1 bcm2708_fb.fbwidth=800 bcm2708_fb.fbheight=480 bcm2708_fb.fbswap=1 smsc95xx.macaddr=DC:A6:32:94:29:36 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait
Build Date: 07 July 2020 09:38:51PM
xorg-server 2:1.20.4-1+rpt2 (https://www.debian.org/support)
Current version of pixman: 0.36.0
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: Wed Jan 20 16:57:22 2021
(==) Using config directory: “/etc/X11/xorg.conf.d”
(==) Using system config directory “/usr/share/X11/xorg.conf.d”
./zynthian.sh: line 55: /sys/class/backlight/*/bl_power: No such file or directory
INFO:zynthian_gui_config.: ZYNTHIAN-UI CONFIG …
INFO:zynthian_gui_config.: No Wiring Layout configured. Only touch interface is available.
DEBUG:zynthian_gui_config.: ZYNCODER A: [0, 0, 0, 0]
DEBUG:zynthian_gui_config.: ZYNCODER B: [0, 0, 0, 0]
DEBUG:zynthian_gui_config.: SWITCHES layout: [0, 0, 0, 0]
DEBUG:zynthian_config.get_disabled_midi_in_ports: DISABLED_MIDI_IN = [’’]
DEBUG:zynthian_config.get_enabled_midi_out_ports: ENABLED_MIDI_OUT = [‘ttymidi:MIDI_out’]
DEBUG:zynthian_config.get_enabled_midi_fb_ports: ENABLED_MIDI_FB = [’’]
DEBUG:zynthian_gui_config.set_midi_config: MMC Bank Change CCNum: 0
DEBUG:zynthian_gui_config.set_midi_config: MMC Bank Change UP: None
DEBUG:zynthian_gui_config.set_midi_config: MMC Bank Change DOWN: None
DEBUG:zynthian_gui_config.set_midi_config: MMC Program Change UP: None
DEBUG:zynthian_gui_config.set_midi_config: MMC Program Change DOWN: None
lilv_world_load_bundle(): warning: Replacing version 2071.7 of http://gareus.org/oss/lv2/b_whirl#extended from <file:///zynthian/zynthian-plugins/lv2/b_whirl.lv2/>
lilv_world_load_bundle(): note: New version 2071.11 found in <file:///zynthian/zynthian-plugins/lv2/b_whirl/>
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/>
lilv_world_load_bundle(): note: New version 2071.11 found in <file:///zynthian/zynthian-plugins/lv2/b_whirl/>
lilv_world_load_bundle(): warning: Ignoring bundle <file:///zynthian/zynthian-plugins/lv2/b_synth.lv2/>
lilv_world_load_bundle(): note: Newer version of http://gareus.org/oss/lv2/b_synth loaded from <file:///zynthian/zynthian-plugins/lv2/b_synth/>
INFO:zynthian_gui.: STARTING ZYNTHIAN-UI …
INFO:zynthian_gui_keybinding.load: Loading key binding from keybinding.yaml
DEBUG:zynthian_gui_keybinding.load: Loading default keyboard bindings.
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
libjackpeak failed to start jack client: 17
/zynthian/config/img/fb_zynthian_error_ip.png is 800x480 PNG image, color type RGB_ALPHA, 8 bit, file gamma 0.4546
PNG file: /zynthian/config/img/fb_zynthian_error_ip.png - Application must supply a known background gamma
Zooming image by 100%…done
Merging…done
didn’t find evidence of prior run.
Building XImage…done

10

because jackd isn’t running, zynthian ui won’t start.
what’s the output of aplay -L (through a ssh connection) ?

11

I tried changing the default card by changing its number by doing this:

to set the device to your default card you will need to edit the file /usr/share/alsa/alsa.conf with the command sudo nano /usr/share/alsa/alsa.conf scroll down until you find the lines

defaults.ctl.card 0
defaults.pcm.card 0

and change them to (if your device is also listed as device 1, if not change the 1 to whatever address it was listed at)

defaults.ctl.card 1
defaults.pcm.card 1

Then I went into boot/config.txt and commented out rpbi soundcard. None of these changed anything.

Here’s what I get in PuTTY with aplay -L:

root@zynthian:~# aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
default:CARD=b1
bcm2835 HDMI 1, bcm2835 HDMI 1
Default Audio Device
sysdefault:CARD=b1
bcm2835 HDMI 1, bcm2835 HDMI 1
Default Audio Device
dmix:CARD=b1,DEV=0
bcm2835 HDMI 1, bcm2835 HDMI 1
Direct sample mixing device
dsnoop:CARD=b1,DEV=0
bcm2835 HDMI 1, bcm2835 HDMI 1
Direct sample snooping device
hw:CARD=b1,DEV=0
bcm2835 HDMI 1, bcm2835 HDMI 1
Direct hardware device without any conversions
plughw:CARD=b1,DEV=0
bcm2835 HDMI 1, bcm2835 HDMI 1
Hardware device with all software conversions
default:CARD=Headphones
bcm2835 Headphones, bcm2835 Headphones
Default Audio Device
sysdefault:CARD=Headphones
bcm2835 Headphones, bcm2835 Headphones
Default Audio Device
dmix:CARD=Headphones,DEV=0
bcm2835 Headphones, bcm2835 Headphones
Direct sample mixing device
dsnoop:CARD=Headphones,DEV=0
bcm2835 Headphones, bcm2835 Headphones
Direct sample snooping device
hw:CARD=Headphones,DEV=0
bcm2835 Headphones, bcm2835 Headphones
Direct hardware device without any conversions
plughw:CARD=Headphones,DEV=0
bcm2835 Headphones, bcm2835 Headphones
Hardware device with all software conversions
default:CARD=IQaudIODAC
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Default Audio Device
sysdefault:CARD=IQaudIODAC
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Default Audio Device
dmix:CARD=IQaudIODAC,DEV=0
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Direct sample mixing device
dsnoop:CARD=IQaudIODAC,DEV=0
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Direct sample snooping device
hw:CARD=IQaudIODAC,DEV=0
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Direct hardware device without any conversions
plughw:CARD=IQaudIODAC,DEV=0
IQaudIODAC, IQaudIO DAC HiFi pcm512x-hifi-0
Hardware device with all software conversions

12

You shouldn’t need to faff around with changing alsa.conf. aplay -l lists the audio devices. Each has a card number followed by its short name. Ensure webconf audio settings “Jackd options” includes -d alsa -d hw;CARD_NAME where CARD_NAME is the short name of the card shown in aplay -l.

For example one of my Zynthians has three audio playback devices: HDMI, headphones and a USB sound card.

aplay -l
**** List of PLAYBACK Hardware Devices ****
card 1: b1 [bcm2835 HDMI 1], device 0: bcm2835 HDMI 1 [bcm2835 HDMI 1]
  Subdevices: 4/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
card 2: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]
  Subdevices: 3/4
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
card 3: CODEC [USB Audio CODEC], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

To use the headphone output I set Jackd Options:

-P 70 -t 2000 -s -d alsa -d hw:Headphones -r 44100 -p 512 -n 3 -X raw
1 Like
13

You were right hw was adressed as 0 in webconf, it now works. Next step touchscreen configuration, but that’s another story. Thank you so much.

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