Tried adding MUTTER_DEBUG_DISABLE_TRIPLE_BUFFERING=1 and screen freeze after plugging external monitor. I test with 2 different 4k monitor, one is ASUS and the other one is Benq. Both can cause this issue.
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1976204 Title: Screen freeze To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1976204/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs