It looks like Wayland is being used, never Xorg. Also there is evidence of some screen updates failing:
Cursor update failed: drmModeAtomicCommit: Invalid argument So please try adding this to /etc/environment: MUTTER_DEBUG_FORCE_KMS_MODE=simple and reboot. ** Package changed: ubuntu => mutter (Ubuntu) ** Tags added: wayland wayland-session -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2088416 Title: Additional monitor screen freeze frame but still responds underneath To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2088416/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
