Problem with USB passthrough to LXC after ugrade to 8

[AndrewSpec]

I have an mopidy LXC container with USB soundcard. All worked fine on v7. After upgrade do v8 it stopped working.

On my lxc.conf I have:

lxc.cgroup2.devices.allow: c 116:* rwm
lxc.mount.entry: /dev/snd dev/snd none bind,optional,create=dir

LXC container sees my soundcard:

root@Mopidy ~# aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
softvol
default
sysdefault:CARD=S51
    SB X-Fi Surround 5.1, USB Audio
    Default Audio Device
front:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    Front speakers
surround21:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    IEC958 (S/PDIF) Digital Audio Output
dmix:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    Direct sample mixing device
dmix:CARD=S51,DEV=1
    SB X-Fi Surround 5.1, USB Audio #1
    Direct sample mixing device
dsnoop:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    Direct sample snooping device
dsnoop:CARD=S51,DEV=1
    SB X-Fi Surround 5.1, USB Audio #1
    Direct sample snooping device
hw:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    Direct hardware device without any conversions
hw:CARD=S51,DEV=1
    SB X-Fi Surround 5.1, USB Audio #1
    Direct hardware device without any conversions
plughw:CARD=S51,DEV=0
    SB X-Fi Surround 5.1, USB Audio
    Hardware device with all software conversions
plughw:CARD=S51,DEV=1
    SB X-Fi Surround 5.1, USB Audio #1
    Hardware device with all software conversions

But I have no sound and when I try to run the speakertest I have:

root@Mopidy ~# speaker-test

speaker-test 1.1.8

Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
Using 16 octaves of pink noise
ALSA lib confmisc.c:767:(parse_card) cannot find card '1'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_card_driver returned error: No such file or directory
ALSA lib confmisc.c:392:(snd_func_concat) error evaluating strings
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_concat returned error: No such file or directory
ALSA lib confmisc.c:1246:(snd_func_refer) error evaluating name
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) Unknown PCM dmix
Playback open error: -2,No such file or directory

And finally when I try to run alsamixer I have:

root@Mopidy ~# alsamixer
cannot open mixer: No such file or directory

I have no idea what is broken after latest update.

 

[AndrewSpec]

ok, I solved it. It was not the PVE update to v8 but my custom asound.conf file where I changed the default sound card number from 0 to 1 but after the upgrade the number changed and was not updated in asound.conf.