https://bugs.kde.org/show_bug.cgi?id=426312
Bug ID: 426312
Summary: dual driver monitor doesn't wake display properly
Product: kwin
Version: 5.19.5
Platform: Neon Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: compositing
Assignee: kwin-bugs-n...@kde.org
Reporter: ryein.godd...@gmail.com
Target Milestone: ---
SUMMARY
I have a dual driver monitor the Acer Predator 43 inch display. It has dual
display ports that allow the monitor to run at 144 hz. (side note: 144 hz
option doesn't show up) but the issue I am bringing up here is when you wake
the display from being turned off for "power saving" it doesn't come back
properly. I think the compositor is broken as all the extra effects like blur
and transparency are broken and some windows like firefox are cut off and moved
on the display and some windows even have a black border around it.
STEPS TO REPRODUCE
1. Get an acer predator 43 monitor
2. let the display "sleep" or power off
3. wake the display with the keyboard or mouse
OBSERVED RESULT
As described above. The display won't display correctly and compositor effects
are "disabled" and visual artifacts exist.
EXPECTED RESULT
Everything should return as you left it with all effects working.
SOFTWARE/OS VERSIONS
Running latest KDE Neon User edition 5.19
Plasma Version : 5.19.5
Framewokrs 5.73.0
Qt 5.14.2
Kernel 5.4.0-45-generic
64 bit
Graphics Driver is Closed Source Nvidia driver with a 1070
Nvidia driver version 440.100
ADDITIONAL INFORMATION
To fix this problem you can simply change the compositor from whatever setting
you had it on such as OpenGL 2/3 and switch it. Then return it back to your
original setting. Everything appears as it was, except the window positions
are wrong.
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