I am using xubuntu 10.04, and I am having issues with the sound. First things just sounded strange, then I figured out that I am actually getting the surround left and surround right sound in my headset. If I change the balance in aumix to either far left or far right, things sound better. I still get sound in both headphones, but only the left or right channel.
If I do speaker-test -c6, it becomes clear that I am missing the center channel.
In /etc/pulse/daemon.conf I have set default-sample-channels = 2
Is there a way for pulseaudio to downmix from surround to stereo for the ouptut?