sound disappeared

[dkeg]

Recent updates seems to have done a dirty deed to alsa.
I first noticed it by seeing new weird entries in pstree and htop. Then I noticed my volume was muted. Further investigation gave me no soundcards found.
I am not sure what caused it, looks like as pidsley stated came with kernel upgrade to 3.9-7 but I had 3.10-rc6, so for me I can't link it to that.
Either way this seems to be the solution.

Code: Select all

cd /etc/modprobe.d/
sudo vi alsa-base.conf

Note, replace vi with editor of choice.

find and comment out these three lines (you can see I've already commented them out)

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##install snd /sbin/modprobe --ignore-install snd && { /sbin/modprobe --quiet snd-ioctl32 ; /sbin/modprobe --quiet snd-seq ; : ; }
##install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi && { /sbin/modprobe --quiet snd-seq-midi ; : ; }
##install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 && { /sbin/modprobe --quiet snd-emu10k1-synth ; : ; }

save and reboot. You should be good to go.

[pidsley]

Thanks dkeg. This happened to me on Trollinger with an upgrade to the 3.9-7 kernel, and your fix worked for me.

[ivanovnegro]

Did not reboot yet after today's upgrade but I still use 3.2 kernel. I heard another possibility is to purge:

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oss-compat

This package is mostly unneeded, it assures OSS compatibility.

[dkeg]

just tested your theory ivan. I tested your theory and no, it did not do the trick. I un-commented out the specified lines, purged oss-compat, and rebooted. No volume. Re-commented, re-installed oss-compat, and volume was back. I'm on a 3.10 kernel, curious to hear back to see if it does the trick for you

[ivanovnegro]

Interesting, we'll see when I reboot but I think I am not infected.

[ivanovnegro]

Everything alright with kernel 3.2. Sound works after reboot. I did not make any changes.

[bin_bob]

I was having a similar problem on Linuxbbq "ENOUGH".
My problem seemed to be related to jack audio server.
After running jack my sound would break on the next boot. Dkeg's method would get my sound back, but unfortunately I need the MIDI sequencer
for the programs I use so no dice.

Now sound is working happily on each boot with 3.6-0.towo kernel and still using jack. yay