I have the same issue with Ubuntu 16.04 (LTS) on my workstation. The sound bar regularly pops up when I am listening to music, both when using speakers or USB headphones.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1585084 Title: Volume notification keeps popping up constantly(the notifyosd bubble on top-right corner) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1585084/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs