https://bugs.kde.org/show_bug.cgi?id=433554
Bug ID: 433554
Summary: Visual artifacts on monitor that uses 100% scale when
using custom (both fractional and integer) scaling on
a second monitor.
Product: kwin
Version: 5.21.1
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
Visual artifacts on monitor that uses 100% scale when using custom (both
fractional and integer) scaling on a second monitor. Everything does look fine
on the second monitor though.
STEPS TO REPRODUCE
1. Have a multi monitor setup (tested on 2 monitors)
2. Set 1 monitor to a custom scale (150% and 200% were tested so far), 1
monitor to 100%
3. Open the setting app, check the fonts (tested with various fonts)
4. Hover the mouse pointer over the window decoration. It should look distorted
(tested with Adwaita, Capitaine & WhiteSur cursor themes)
5. Right click on the desktop on the 100% scale monitor and hover over the
submenus. Some areas should go transparent/flicker for no reason. (tested with
Breeze-dark and WhiteSur themes)
6. Clicking in the topbar sometimes doesn't show anything or go
transparent/flicker. (tested with latte-dock-git r5033 & Plasma panels)
OBSERVED RESULT
See reproduce steps above.
EXPECTED RESULT
Everything on the monitor that's running on 100% scale next to a monitor with
custom scale, should look exactly the same as it would normally, without a
custom scaled monitor or without a second monitor at all. (no artifacts)
SOFTWARE/OS VERSIONS
Operating System: Arch Linux x86_64
Kernel version: 5.11.1-zen1-1-zen
KDE Plasma Version: 5.21.1
KDE Frameworks Version: 5.79.0
Qt Version: 5.15.2
ADDITIONAL INFORMATION
Graphics Platform: Wayland
GPU: AMD Radeon 6900XT with Mesa driver 20.3.4.0
Video here https://youtu.be/E30cim44Gv0
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