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
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https://bugs.launchpad.net/bugs/1924624
Title:
after upgrade to 5.8.0-49 with intel graphics a lot of glitches render
screen unusable
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