Why does sound stop working after a while?

Posted by badp on Ask Ubuntu See other posts from Ask Ubuntu or by badp
Published on 2011-01-23T16:05:36Z Indexed on 2011/02/24 7:32 UTC
Read the original article Hit count: 266

Filed under:

10.10

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audio

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Troubleshooting

I don't know how to reproduce this problem, because I don't regularly play music or sound. All I know is that, sometimes, I'll load a video (from youtube or from a local file) and there will be no sound.

Everything looks fine software wise:

Rebooting always fixes.
aplay, paplay and pals give no error message
I'm not in the audio group, as advised

The device exists and appears in use:

$ lsof /dev/snd/by-path/pci-0000\:00\:1b.0
COMMAND     PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
pulseaudi 17313 badp   23u   CHR 116,10      0t0 7628 /dev/snd/by-path/../controlC0
pulseaudi 17313 badp   30u   CHR 116,10      0t0 7628 /dev/snd/by-path/../controlC0

Restarting pulseaudio or alsa seems to do no good.

What is wrong here?

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