There might be some old config setting that's wrong as a result of the upgrades.
Please try removing your old personal audio settings by running: mv ~/.config/pulse oldconfigpulse ** Summary changed: - Gnome Shell always started muted on Disco + Sound is muted by default after upgrading 18.04->18.10->19.04 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821904 Title: Sound is muted by default after upgrading 18.04->18.10->19.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1821904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs