Most recent kernel where this bug did not occur: 2.6.13.2 Distribution: slackware Hardware Environment: fujitsu-siemens lifebook c-1020 this laptop has via technologies vt8233/a/8235/8237 ac97 audio controller that uses snd-via82xx driver (compiled in) this seems to be a regression, as sound works after resuming with 2.6.13.2. applications do not complain, there seems to be nothing relevant in logfiles, but there is no sound at all.
Might be unrelated, but I see the same behaviour with snd_intel8x0 on ICH3 on 2.6.15-rc[45]. No sound until module reload, fiddling with mixer controls doesn't help.
Ugh, changing mixer controls *does* help, but apparently you need to change both Master and PCM (which still is a regression). Sorry for the noise, though.
grmh. thanks for the hint. seems to be the same problem for me, so this is not a single audiocard. after resuming mixer levels are correct (so i did not bother changing them both ;) ), but there is no sound. as mentioned, changing both master and pcm restores it.
This (and several other recent regressions) is probably related to the recent ALSA PM changes.
Still no change as of 2.6.16-rc2. OTOH, sound is fine after S4 (software suspend), only S3 seems to be affected.
Can you please verify if the problem is still present in 2.6.18?
unfortunately motherboard died for the laptop in question during this time. i hope somebody has a similar machine or one that also has such a problem. i could try gaining access to a similar laptop, but that is a relatively small chance.