The "Protocol error" is bug 1965563. There's a debug feature you can enable to check for sure how much of the screen is changing: Add CLUTTER_PAINT=damage-region to /etc/environment. It will show you what if anything is causing gnome-shell to keep redrawing.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1974054 Title: Without a reason gnome-shell CPU usage gets high To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1974054/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs