Thanks. I can't see anything obvious in that log. Next please try disabling all Ubuntu extensions in the the 'Extensions' app. Then log out and log in again. Because that log shows you do at least still have 'Ubuntu Dock' enabled.
** This bug is no longer a duplicate of bug 1849142 appindicator extension slows down GUI spamming the log with "[AppIndicatorSupport-FATAL] unable to lookup icon ..." or "Impossible to lookup icon" ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete ** Tags added: nvidia 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/1894666 Title: Gnome high CPU preventing login after screen lock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1894666/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs