Comment 8 for bug 217789

I have an HP Pavilion with the ECS MCP61PM-HM board (HP/Compaq name: Nettle3-GL8E)

I tried adding "options snd-hda-intel model=3stack-hp" to /etc/modprobe.d/alsa-base

This made the unknown HDA error in dmesg go away, and the volume controls which were previously set to 100% across the board were reset to somewhere in the 60% region. When I crank them back up to 100%, I believe it may have increased the volume somewhat from where it was previously, but its still nowhere near the volume you would expect (and that I was able to get on the PC I just replaced.) For the record, these are powered (by 110v) speakers.

I experimented with "options snd-hda-intel model=6-stack-dig" since this system does have 6 jacks on the back, 2 in the front (but no unused digital out that I can see). The dmesg error is still gone, but the volume seems identical. One side effect though, is that the volume slider in xmms no longer actually adjusts the volume.

For what its worth, this is not limited to Ubuntu - the same behavior occurs in Fedora Core 10, so I'm thinking that this is related to Alsa perhaps as your post would suggest.

I will experiment with some of the others and see if I do any better. Thanks a ton for the pointers!!!

CAB