Hey,
I have the same sound card and had problems for the last couple months. Tried just about everything. However, only two things have solved it for me, but I'm still a newbie and don't know much so this may be absolutely worthless to you.
One of my problems was that the snd-atiixp-modem was loading with the snd-atiixp and crowding it out. I don't understand the nitty gritty of this totally, but it appears that the modem and sound card are on the same chip and they don't co-exist very well with Alsa. So, my solution was to blacklist the modem so that it simply doesn't enter into the mix. I don't use the modem anyway.
To do this, open up terminal.
sudo gedit /etc/modprobe.d/blacklist
at bottom of list, type...
#get rid of snd-atiixp-modem
snd-atiixp-modem
then save.
However, I also had to do the following little tweak, excerpted from the following webpage....
http://www.beginningubuntu.com/dappe...weird_notebook
"My notebook is possibly the most Linux-incompatible machine that's ever been made. Here's a tip: Don't buy an Asus A6R. It's one of the worst notebooks I've ever owned.
Sound didn't work straight off. The notebook has an IXP SB400 AC'97 Audio Controller, according to Ubuntu's Device Manager. If you've got the same sound card, and want to get it working, you need to do two things.
(1) Double-click the speaker icon in Ubuntu's system tray and click Edit -> Preferences in the Volume Control window that appears. In the list, look for the Master Surround entry, and put a checkbox in it. Then look for External Amplifier and put a check in it. Click the Close button then click the Switches tab in the Volume Control window. Remove the check against External Amplifier.
(2) Then click the Playback tab and click the Speaker icon beneath the Master Surround slider, so that it's no longer muted. Then adjust the slider. Playback some audio and you should find everything now works. Basically, the Master Surround slider is now your volume slider. Weird, but true. To make the system tray applet use the Master Surround to control the volume, right-click the system tray speaker icon, select Preferences, and select Master Surround in the list. "
And so now I have sound. I hope it helps you as well.
Best wishes,
Ephraim
