https://bugs.kde.org/show_bug.cgi?id=481664
Bug ID: 481664
Summary: When windows appear on a vertical screen, they first
appear rotated 180 degrees before they are rendered
correctly
Classification: Plasma
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: o...@geek.co.il
Target Milestone: ---
Created attachment 166004
--> https://bugs.kde.org/attachment.cgi?id=166004&action=edit
Screencast showing the flickering. If you pause on the correct frame, you can
see the rotated rendering.
SUMMARY
Running Neon testing with wayland with one vertical screen and one horizontal
screen, when a window is supposed to appear on the vertical screen it first
appears at the bottom right corner rotated 180 degrees (so possibly its the top
left corner from the window's perspective) - for a fraction of a second, before
it is rendered correctly. When the window is removed, it first rendered rotated
again - for a fraction of a second, before being removed
STEPS TO REPRODUCE
1. Configure an external monitor to be in vertical orientation
2. Move the mouse cursor to the vertical screen
3. Launch an application
OBSERVED RESULT
There's a flicked as the new window first appears rotated and then renders
normally.
EXPECTED RESULT
The new window should not flicker.
SOFTWARE/OS VERSIONS
Operating System: KDE neon Testing Edition
KDE Plasma Version: 6.0.0
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Kernel Version: 6.5.0-17-generic (64-bit)
Graphics Platform: Wayland
Processors: 20 × 12th Gen Intel® Core™ i7-12700H
Memory: 31.0 GiB of RAM
Graphics Processor: Mesa Intel® Graphics
kwin_wayland --version -> 6.0.0
apt policy kwin-wayland -> 4:5.91.90+p22.04+vstable+git20240220.0137-0
ADDITIONAL INFORMATION
See attached screencast for how it looks.
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