Thank you for reporting this bug to Ubuntu. Ubuntu 17.04 (zesty) reached end-of-life on January 13, 2018.
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. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed. ** Changed in: pulseaudio (Ubuntu) Status: Confirmed => 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/1521987 Title: Sound is not automatically switched back from headphones to speakers Status in PulseAudio: Confirmed Status in pulseaudio package in Ubuntu: Incomplete Bug description: When plugging in headphones, sound output is correctly switched from speakers (line out) to the headphones. When the headphones are unplugged, sound is NOT automatically switched back to the speakers. This bug started happening on my system after I upgraded from 14.04 to 15.10 so it is a regression. Attached is pulseaudio log of what happens when I plug and unplug my headphones. To manage notifications about this bug go to: https://bugs.launchpad.net/pulseaudio/+bug/1521987/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp