I agree with aschuring above that this looks like a symptom of bug 295136 .
-- MASTER storing ALSA mixer element values during shutdown hangs nondeterministically if non-loopback network interfaces are still up https://bugs.launchpad.net/bugs/274995 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
