To reproduce and then repair this bug do the following.
Delete /var/lib/asound.state (to mimic a fresh install, when it has not
yet been created)
Run
sudo alsactl init
The sound card is probed. Alsactl reports;
Unknown hardware: "Audigy2" "SigmaTel STAC9750,51"
"AC97a:83847650" "" ""
Hardware is initialized using a guess method
A version of asound.state is created that lacks (at least) a master volume mute
switch. There is no sound output.
Resore the previously good asound.state, run
sudo alsactl restore
and the card works again.
Does this mean that something (I don't know what) needs to be improved
so it can recognise this card (Audigy 2 Value [SB0400)?
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No sound from any application after upgrading to Jaunty. I am using Dell Studio.
https://bugs.launchpad.net/bugs/406356
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