Looks like this is really a PA's defect. you could test this workaround temporarily:
edit /etc/pulse/default.pa do some change like this: load-module module-switch-on-connect blacklist="" I will find a physical machine to debug this issue, and try to find a real solution. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1888598 Title: pulseaudio has is buggy with hdmi audio and sleep/wake To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1888598/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs