Thanks for the bug report. First please try disabling all extensions in the Extensions app, then log in again.
If the bug still occurs then next edit /etc/default/grub and change: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.enable_psr=0" and then run: sudo update-grub and reboot. If the bug still occurs after that then while it is happening please run: journalctl -b0 > journal.txt and attach the resulting text file here. ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1947326 Title: Clipping and pointer lag after update to 21.20 (i915 driver) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1947326/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs