I don't manage to get sound working on my Ubuntu 12.10. The output of my alsa-info.sh is located here.
I would appreciate any help to fix this problem!
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For what it's worth, I've just resolved a no-sound problem on my HDA Intel PCH card: I ran 'alsamixer' in a terminal and unmuted the 'Line' column (with the M key).
I had this same problem on my Asus K55A laptop, and I fixed it by doing the following:
open terminal and:
sudo nano /etc/modprobe.d/alsa-base.conf
at the end of the script add this line:
options snd-hda-intel model=pch position_fix=1
ctrl+x to exit
When you try to exit it will ask yout to save, enter "Y" then "Enter"
It will then ask you what file name you want to save it as, Do Not Change It!! Just hit "Enter"
Restart your machine and you should be good to go!!