I think its related to this: http://askubuntu.com/questions/94369/is-there-a-way-to-disable-auto-switch-output-channel-when-i-connect-headphones https://bugs.launchpad.net/ubuntu/+source/alsa-driv -- pgp key: 0x702C5BFC Fingerprint: 267F DC06 7F96 3375 969A 9EE6 8E37 7CF4 702C 5BFC