This seem to be bug in gnome-alsamixer according to http://thread.gmane.org/gmane.linux.alsa.devel/5047/focus=5060
-- error message when gnome-alsamixer is launching https://bugs.launchpad.net/bugs/106903 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