1) the logic of the enumlated ac97 is defined in ichac97SetVolume()
2) there are differences between real ad1980 and the emulated ad1980
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1325308
1) the logic of the enumlated ac97 is defined in ichac97SetVolume()
2) there are differences between real ad1980 and the emulated ad1980
https:/ /bugs.launchpad .net/ubuntu/ +source/ alsa-driver/ +bug/1325308