Same here, computer is unusable. Have to use the current kernel 5.4.0-72-generic or 5.8.0-48-generic as workaround.
5.8.0-49 and 5.8.0-50 are broken... (Ubuntu 20.04.2) *-display description: VGA compatible controller produit: Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller fabricant: Intel Corporation identifiant matériel: 2 information bus: pci@0000:00:02.0 version: 06 bits: 64 bits horloge: 33MHz fonctionnalités: msi pm vga_controller bus_master cap_list rom configuration : driver=i915 latency=0 ressources : irq:32 mémoire:f7800000-f7bfffff mémoire:e0000000-efffffff portE/S:f000(taille=64) mémoire:c0000-dffff ** Tags added: kernel-bug ** Tags added: regression-update -- 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 with intel graphics a lot of glitches render screen unusable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-hwe-5.8/+bug/1924624/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs