@Stefan You could try installing linux-backports-modules-alsa-karmic-generic and rebooting.
-- Karmic: PCM volume (as seen in alsamixer) "stuck" at 100% with pulseaudio enabled https://bugs.launchpad.net/bugs/420578 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs