[FIXED] Alsa stopped working for non-root user

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#1 Thu, 2017-03-02 15:15
imv
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The user is in the audio group, and it worked before.
aplay -L list only the null soundcard, and mpv prints

ALSA lib pcm_hw.c:1713:(_snd_pcm_hw_open) Invalid value for card
[ao/alsa] Playback open error: No such file or directory
[ao/oss] Can't open audio device /dev/dsp: No such file or directory

Under sudo, aplay lists soundcards correctly, and sound works in mpv.
The contents of /dev/snd seem to be readable and writable only by root:
crw------- 1 root root  116,  2 Mar  2 19:59 controlC0
crw------- 1 root root  116,  7 Mar  2 19:59 controlC1
crw------- 1 root root  116,  6 Mar  2 19:59 hwC0D0
crw------- 1 root root  116, 10 Mar  2 19:59 hwC1D0
crw------- 1 root root  116,  3 Mar  2 19:59 pcmC0D3p
crw------- 1 root root  116,  4 Mar  2 19:59 pcmC0D7p
crw------- 1 root root  116,  5 Mar  2 19:59 pcmC0D8p
crw------- 1 root root  116,  9 Mar  2 19:59 pcmC1D0c
crw------- 1 root root  116,  8 Mar  2 21:04 pcmC1D0p
crw-rw---- 1 root audio 116, 33 Mar  2 19:59 timer

Tue, 2017-03-21 08:52
imv
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The problem seems to be fixed. What fixed it I can't tell, but among other things, I updated the system and deleted /var/lib/alsa.

Wed, 2017-07-26 11:02
Mark
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