Fixed sound on Acer 17.3" Laptop

Neat laptop but sound didn't work in Ubuntu Lucid. Found this fix on the 'net. I have no idea why it works but my thanks to whoever found it.

root@tarvid-laptop:~# diff alsa-base.conf /etc/modprobe.d/alsa-base.conf 

40a41,43

> options snd-hda-intel model=3stack-dig

> options snd-hda-intel enable_msi=1

> options snd-hda-intel single_cmd=1