Can you please try downgrading to a supported version of the nvidia driver:
https://launchpad.net/ubuntu/+source/nvidia-graphics-drivers-390 and tell us if the problem still happens? ** Tags added: nvidia ** Changed in: gnome-shell (Ubuntu) Status: Confirmed => Incomplete ** Tags added: performance -- 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/1805189 Title: gnome-shell high CPU usage (~100% CPU1) in idle with external monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1805189/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
