Comment 2 for bug 150592

I have an Asus A7T as well, with ath ALC882 audio codec. I was able to fix my sound issue using the alsa-base package installed by default (version 1.0.14-1ubuntu2 at the time of this writing). Here are the steps:

A. Create a new file called “/etc/modprobe.d/snd-hda-intel.modprobe”:
$ sudo gedit /etc/modprobe.d/snd-hda-intel.modprobe

Add the following line to the file and then save it:
options snd-hda-intel model=w2jc

B. Edit the file “/etc/modprobe.d/alsa-base”:
$ sudo gedit /etc/modprobe.d/alsa-base

Add the same line to the end of this file and then save it:
options snd-hda-intel model=w2jc

C. Reboot. After I rebooted, I had sound.