Unsure the system has enough information from the hardware to tell appart a disconnect from a power off, there is no mechanical check that something is plugged in the port, it's just depending on whether a signal is received. That said it looks like a duplicate of #1847570
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1850887 Title: Audio / Sound reverts to HDMI when power event occurs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1850887/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs