Your system is logging a couple of issues repeatedly: Nov 25 15:00:52 username-desktop pulseaudio: [pulseaudio] alsa- mixer.c: Volume element Speaker has 8 channels. That's too much! I can't handle that!
and Nov 25 15:12:09 username-desktop pulseaudio: [pulseaudio] shm.c: shm_open() failed: No such file or directory Bug 1652505 mentions that second one too. In that case the solution was to get a newer version of PulseAudio. Can you try Ubuntu 17.10 or 18.04 by any chance? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1734503 Title: In Xfce, Gnome3, Ubuntu Studio, and Mate Desktop the pulse audio gui application is corrupted, I can't switch outputs. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1734503/+subscriptions -- ubuntu-bugs mailing list email@example.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs