Yavdr ansible with Ubuntu 20.04 no sound [FIXED]

    I don't think the issue is related to kernel or the audio devices.


    I've done some more analysis. The problem is when the PC reboots (OR when Kodi is exited (back to VDR)) I'm getting:


    vdr: audio/alsa: playback open 'hdmi:CARD=NVidia,DEV=3' error: Device or resource busy


    see below...

    I get no audio when the logs show:

    Jan 26 11:20:19 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:check_state(): got status code: 912

    Jan 26 11:20:19 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:status: softhddevice is detached

    Jan 26 11:20:19 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:check_state(): got status code: 912

    Jan 26 11:20:19 ubuntu2020 vdr: audio: 'alsa' output module used

    *Jan 26 11:20:19 ubuntu2020 vdr: audio/alsa: playback open 'hdmi:CARD=NVidia,DEV=3' error: Device or resource busy

    *Jan 26 11:20:19 ubuntu2020 vdr: audio: 44100Hz supports 0 0 0 0 0 0 0 0 channels

    *Jan 26 11:20:19 ubuntu2020 vdr: audio: 48000Hz supports 0 0 0 0 0 0 0 0 channels

    *Jan 26 11:20:19 ubuntu2020 vdr: audio: 192000Hz supports 0 0 0 0 0 0 0 0 channels

    ...

    Jan 26 11:20:19 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:change_state with command atta and options "-d :0" to attached

    Jan 26 11:20:19 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:check_state(): got status code: 910

    Jan 26 11:20:19 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:softhddevice successfully attached

    Jan 26 11:20:19 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:current PrimaryDevice is softhddevice-openglosd (Index: 1, Number: 1, hasDecoder: True, isPrimary: True)

    Jan 26 11:20:19 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:softhddevice is the primary device

    Jan 26 11:20:19 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:needed 0.002 s to switch primary device


    But when this occurs:

    Jan 26 11:20:33 ubuntu2020 vdr: [1672] executing command 'sudo /bin/systemctl --no-block restart vdr.service'


    The audio device is available and the logs show this:

    Jan 26 11:20:35 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:check_state(): got status code: 912

    Jan 26 11:20:35 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:status: softhddevice is detached

    Jan 26 11:20:35 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:check_state(): got status code: 912

    Jan 26 11:20:35 ubuntu2020 vdr: audio: 'alsa' output module used

    *Jan 26 11:20:36 ubuntu2020 vdr: audio/alsa: supports pause: yes

    *Jan 26 11:20:37 ubuntu2020 vdr: audio: 44100Hz supports 2 2 2 2 2 2 2 2 channels

    *Jan 26 11:20:37 ubuntu2020 vdr: audio: 48000Hz supports 2 2 2 2 2 2 2 2 channels

    *Jan 26 11:20:37 ubuntu2020 vdr: audio: 192000Hz supports 0 0 0 0 0 0 0 0 channels

    ...

    Jan 26 11:20:37 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:change_state with command atta and options "-d :0" to attached

    Jan 26 11:20:37 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:check_state(): got status code: 910

    Jan 26 11:20:37 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:softhddevice successfully attached

    Jan 26 11:20:37 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:current PrimaryDevice is softhddevice-openglosd (Index: 1, Number: 1, hasDecoder: True, isPrimary: True)

    Jan 26 11:20:37 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:softhddevice is the primary device

    Jan 26 11:20:37 ubuntu2020 yavdr-frontend[1118]: DEBUG:softhddevice:needed 0.002 s to switch primary device

    Jan 26 11:20:37 ubuntu2020 vdr: video: get hwaccel context, not supported

    *Jan 26 11:20:37 ubuntu2020 vdr: audio/alsa: using device 'hdmi:CARD=NVidia,DEV=3'

    Jan 26 11:20:37 ubuntu2020 vdr: audio/alsa: start delay 336ms


    Is something holding the also device busy when the PC boots, or when Kodi is exited?


    Any idea why this is different when VDR is restarted with systemctl?

    You could use https://manpages.ubuntu.com/manpages/focal/man1/fuser.1.html to determine which process currently uses a sound device.


    The normal configuration is as follows:

    • pulseaudio opens the alsa devices exclusively during it's startup
    • vdr and kodi act as pulseaudio clients (directly or via the alsa-Plugin for pulseaudio), so the don't need direct access to the sound devices and there should no blocking issue
    • after an idle period pulseaudio releases the sound devices to allow them to change to a power saving state and tries to open them again if a pulse client is playing audio (this can be disabled by preventing pulseaudio to load the module-suspend-on-idle module in /etc/pulse/default.pa).

    Access permissions are set by the user session via ACLs so there is no need to add the user vdr to any additional sound-related groups.


    If you change things around (e.g. if you want the vdr and KODI to use alsa directly) you need to disable pulseaudio (the yavdr-frontend script can do this by suspending pulseaudio temporarily if you configure it accordingly) in order to allow the programs to access the sound devices directly reliably and add the user vdr to the audio group.

    yaVDR-Dokumentation (Ceterum censeo enchiridia esse lectitanda.)

    Gefällt mir 1

    Thanks for that seahawk1986.


    I started by investigating again, by removing:

    '-a hdmi:CARD=NVidia,DEV=3

    -p hdmi:CARD=NVidia,DEV=3'

    from 50-softhddevice.conf with "sudo vdrctl edit softhddevice"


    I've changed nothing else - but now audio is working - after a reboot and after exiting Kodi.


    am now getting:

    Jan 27 08:16:04 ubuntu2020 yavdr-frontend[1115]: DEBUG:VDRFrontend:user is active: True

    Jan 27 08:16:04 ubuntu2020 yavdr-frontend[1115]: DEBUG:softhddevice:check_state(): got status code: 912

    Jan 27 08:16:04 ubuntu2020 yavdr-frontend[1115]: DEBUG:softhddevice:status: softhddevice is detached

    Jan 27 08:16:04 ubuntu2020 yavdr-frontend[1115]: DEBUG:softhddevice:check_state(): got status code: 912

    Jan 27 08:16:04 ubuntu2020 vdr: audio: 'alsa' output module used

    Jan 27 08:16:04 ubuntu2020 vdr: audio/alsa: supports pause: yes

    Jan 27 08:16:04 ubuntu2020 vdr: audio: 44100Hz supports 1 2 3 4 5 6 7 8 channels

    Jan 27 08:16:04 ubuntu2020 vdr: audio: 48000Hz supports 1 2 3 4 5 6 7 8 channels

    Jan 27 08:16:04 ubuntu2020 vdr: audio: 192000Hz supports 1 2 3 4 5 6 7 8 channels

    ...

    Jan 27 08:16:05 ubuntu2020 vdr: audio/alsa: using device 'default'

    Jan 27 08:16:05 ubuntu2020 vdr: audio/alsa: start delay 336ms



    So - everything is good. But I don't know what has changed!

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