Hmmmm... ok. I didn't realize there was a second pulseaudio config. I have no idea how it got there, nor where it came from, and I do not recall ever setting it, but sure enough:
### Make some devices default #set-default-sink output set-default-source 2 set-source-mute 2 0 So this is likely cruft left over from an older version... to build this machine, I did a fresh Xenial install and then installed a backup of /home/$USER via rsync. However, I do not ever remember configuring this file at any point in the past, AND this worked just fine in Trusty, and also worked fine in Xenial until it stopped working, then it started working, then it stopped working. Is there some sort of race condition where ~/.pulse/default.pa may or may not be the default.pa Pulse uses? Anyway, I'm removing the file and restarting to see what happens. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1547585 Title: Pulseaudio stopped working but sound still works at the low level (can be controlled with alsamixer) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1547585/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs