This post seems to confirm your model of laptop has issues with PSR on Linux:
https://www.reddit.com/r/archlinux/comments/jzhwmv/graphical_glitches_on_arch_running_kde_520_on_new/ so the workaround should be: i915.enable_psr=0 But please confirm. ** Summary changed: - [Ice Lake] Incomplete screen redraws + [Lenovo Yoga Slim 7 14IIL05] Incomplete screen redraws ** No longer affects: mutter (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1937072 Title: [Lenovo Yoga Slim 7 14IIL05] Incomplete screen redraws To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1937072/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
