Thank you for reporting this bug to Ubuntu. Ubuntu 15.04 (vivid) reached end-of-life on February 4, 2016.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1495293 Title: Upon switching sound output device sound mutes Status in pulseaudio package in Ubuntu: Incomplete Bug description: So this is what happened, I just plugged in my headphones, and even though before when I was using the volume was up almost full, the volume went to mute, then I turned up the volume, and when I switched back to my normal speakers, the volume went to mute again! So it seems annoyingly that if I switch from one sound output device to the other, if I change the volume from the newly set mute to a different volume it automatically turns the other to mute (although randomly it does other things)... Now I'm also finding that if I turn the volume up, then switch and it goes to mute, if I then switch back without changing anything the volume goes to just above mute (but sometimes mute) on the one I am switching to. And I am seeing lots of other strange behaviour like this. I have attempted renaming the "~/.config/pulse" directory and then running "pulseaudio -k", but the problem still remains. Adapted from my AskUbuntu question: https://askubuntu.com/questions/673735/upon-switching-sound-output- device-sound-mutes --- OS Information: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.04 Release: 15.04 Codename: vivid Flavour: GNOME GNOME Version: 3.16 Package Information: pulseaudio: Installed: 1:6.0-0ubuntu6 Candidate: 1:6.0-0ubuntu6 Version table: *** 1:6.0-0ubuntu6 0 500 http://archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages 100 /var/lib/dpkg/status To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1495293/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp