Bug 2162087 is experiencing something similar on the same release (and same CPU/GPU generation). They say this environment variable helped:
MUTTER_DEBUG_TRIPLE_BUFFERING=never Just put it in /etc/environment and reboot. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/2164553 Title: External monitor freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2164553/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
