I have a HDA-Intel sound card on a Dell M1330 laptop, There are no errors when I try to play music or a movie, I just have no sound. All volume controls are up and something such as Amarok will play and show the visualisation as if sound is playing. (It doesn't work out of the box as suggested)
FIXED: Just enable your surround sound in the gnome-mixer (you need to goto preferences so you can see them all)
Same laptop, same problem, same fix.
ALSA needs better per-default initiatlization of the mixer. Reassigning. This should probably be merged with the other "broken mixer init" bugs. And the fix is kind of depending on upstream fixing this issue once and for all.
Plase attach output of "amixer" and write exact name of the channel which makes the sound audible. (eventually you can use the alsamixer utility)
No response. If you like to reopen this bug, please, attach output from 'alsa-info.sh --no-upload' script.