[Bug 111701] PSR causes graphical glitches on Dell XPS 15 9570

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111701

--- Comment #26 from Sultan Alsawaf <sultan at kerneltoast.com> ---
(In reply to Jose Roberto de Souza from comment #25)
> > glitches after using my machine for a few minutes.
> 
> Can you explain how is this glitches that are still happening?

I just opened Chromium and shortly after it opened, the bottom half of the
screen glitched for a split second. Also, when I am typing these comments on
Bugzilla, sometimes the word I am typing disappears for a split second.

> Thanks so much for testing, also could you share the dmesg right after ones
> of those glitches happens?

There is nothing in dmesg when the glitches occur.

Also, I have noticed that even with PSR2 disabled, I still see some rare
glitches with only PSR1 enabled on both of my laptops. For example, I wake my
XPS 13 from suspend, the image on the screen shakes briefly. Also, when I am
using Chromium, part of the screen flickers sometimes.

These issues don't happen when PSR is disabled completely.

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