1. Bugs like this are usually due to extensions. So first please try disabling any extensions.
2. Please run this command to send us more information about the system: apport-collect 1900760 3. I have actually seen one possible cause for this in recent code changes, but it would only happen after locking and unlocking the machine. Is that what you find?.. https://gitlab.gnome.org/GNOME/gnome- shell/-/merge_requests/1459 is fixed in gnome-shell 3.38.2. ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- 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/1900760 Title: gnome-shell very high %CPU usage while moving mouse on Ubuntu 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1900760/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs