https://bugs.kde.org/show_bug.cgi?id=479089
Bug ID: 479089
Summary: Resuming from sleep causes KDE to duplicate frames in
a portion of the screen
Classification: Plasma
Product: KScreen
Version: 5.27.10
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: aquath...@protonmail.com
Target Milestone: ---
Created attachment 164487
--> https://bugs.kde.org/attachment.cgi?id=164487&action=edit
Duplicated frames
SUMMARY
***
Resuming from sleep causes KDE to duplicate frames in a portion of the screen.
***
STEPS TO REPRODUCE
1. Use a 16:9 and a 21:9 (primary) monitor (only setup I've tested)
1. Lock your screen
2. Turn off your monitors
3. Let KDE go to sleep
4. Wake up from sleep turning the 16:9 monitor on first, followed by the 21:9
5. Login and move windows to the left side of the 21:9 screen
OBSERVED RESULT
KDE starts duplicating frames and the wallpaper is cut. (see attachment)
EXPECTED RESULT
Wallpaper takes the full 21:9 of the screen and frames do not get duplicated.
SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 39
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11
Kernel Version: 6.6.6-200.fc39.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X 8-Core Processor
Memory: 31,2 GiB of RAM
Graphics Processor: AMD Radeon RX 6750 XT
Manufacturer: ASUS
ADDITIONAL INFORMATION
It looks like KDE sees this screen as if it was 16:9.
Changing wallpaper does not fix this, but the wallpaper selector shows images
using a 16:9 format instead of a 21:9, until the resolution fix mentioned below
is used.
Only the wallpaper portion of the screen is affected by this, using an app that
covers that part is completely fine, things start getting buggy as soon as you
move the window out (is KDE trying to fill the wallpaper gap by repeating old
frames?). It can be fixed by changing the resolution of the screen and
reverting to right one.
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