I did a test today, plug two monitors to Intel hdmi ports, I chose hdmi2 in the gnome-control-center, suspend and resume, the output device still on the hdmi2, I didn't reproduce the problem.
When you have time, please collect the log according to https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1888598/comments/12 and https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1888598/comments/32 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1895665 Title: PulseAudio automatically switches from HDMI 2 after display sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1895665/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
