I’ve recently installed Ubuntu Jaunty on an HP Pavilion dv6-1110ss and everything I tried worked fine except for one thing: there was no sound.

After searching for a while and trying out some stuff, the solution is easy. Just open file /etc/modprobe.d/alsa-base.conf and add the following lines:

options snd-pcsp index=-2
alias snd-card-0 snd-hda-intel
alias sound-slot-0 snd-hda-intel
options snd-hda-intel model=hp-m4
options snd-hda-intel enable_msi=1

(Before finding the previous solution I tried upgrading ALSA -following this instructions– so I’ve tested this with ALSA 1.0.20, but I guess 1.0.18 should work aswell).