Public bug reported:
After upgrading to 5.8.0-49, on a laprtop with intel graphics, graphics was
suddenly extremely glitchy.
Icons from the desktop flash through the browser, windows top bar gets
distorted, all sort of glitches appear, parts of characters are missing in
terminal, scrolling is inconsistent and the whole desktop becomes unusable.
Under wayland the graphics are a bit more stable, but lots of glitches appear
anyway, video reproduction in browser is stuttering and wobbly.
Booting with previous kernel 5.8.0-48 seems to fix the issues.
5.8.0-50 is broken as well.
this is the result of 'sudo lshw -c video' on my hp Elitebook 8470:
*-display
description: VGA compatible controller
product: 3rd Gen Core processor Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:33 memory:d4000000-d43fffff memory:c0000000-cfffffff
ioport:4000(size=64) memory:c0000-dffff
** Affects: linux-meta-hwe-5.8 (Ubuntu)
Importance: Undecided
Status: New
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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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