Got a similar problem. I can hear sound just after restart, then the volume falls to zero. I can see output in padevchooser but hear nothing. I can not find any volume control on zero. I also had trouble with Jaunty. I've attempted qwerty800's proposal to no avail.
Got a similar problem. I can hear sound just after restart, then the volume falls to zero. I can see output in padevchooser but hear nothing. I can not find any volume control on zero. I also had trouble with Jaunty. I've attempted qwerty800's proposal to no avail.
grep Codec /proc/asound/ card0/codec*
Codec: SigmaTel STAC9227