Perhaps this is related? That's my report, and I got rid of it by using the intel_iommu=on kernel parameter, but that introduced another error.
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1925126 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1924624 Title: After upgrade to 5.8.0-49/5.8.0-50 with Intel graphics (gen7, Haswell/Ivy Bridge) a lot of glitches render screen unusable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1924624/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
