I suspect restarting pulseaudio would resolve the problem as well, making it hard to catch. The best thing would be if you could catch a disappearance while a PulseAudio log is running (see wiki.ubuntu.com/PulseAudio/Log ), but that might be tricky. Could also be interesting if there is anything of interest in syslog when a disappearance happens.
Let me know if you get any further. ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/917165 Title: gnome-control-center does not allow selection of USB headset for input or output To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/917165/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs