I can reproduce the bug with a 1080p laptop + 1080p monitor now. The trick is to configure the laptop screen with a different scaling factor to whatever the external monitor will get by default. When the two screens have the same resolution but different scales, windows will jump between the monitors in an infinite loop.
So the bug isn't caused by 4K, just that 4K systems are more likely to have differing monitor scaling factors that trigger the bug. Once again, removing the last line of meta_window_wayland_update_main_monitor() fixes the issue but we need to find a nicer fix. -- 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 if a 4K monitor is added to a 4K laptop while DING is active 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
