Those log messages might be relevant because the "RT" thread of gnome- shell has caused bugs before.
Please try adding: MUTTER_DEBUG_KMS_THREAD_TYPE=user to /etc/environment and then reboot. ** Tags added: nvidia ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete ** Tags added: kms-thread ** Tags added: kmsthread -- 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/2100475 Title: Whole display freezes in 1 second interval for a while To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2100475/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs