I'm seeing this as well on a machine with a clean 17.04 installation that was upgraded to 17.10, using KDE (sound: Intel HDA). Steps in comment #2 fixed this problem, at least temporarily.
-- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1720519 Title: KDE/Kubuntu: Module "module-switch-on-connect" should be loaded once at most. Refusing to load. To manage notifications about this bug go to: https://bugs.launchpad.net/pulseaudio/+bug/1720519/+subscriptions -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs