https://bugs.kde.org/show_bug.cgi?id=523738
Bug ID: 523738
Summary: Hardware cursor offset ~5px to the right on
5120x1440@240 HDR (fixed by KWIN_FORCE_SW_CURSOR=1)
Classification: Plasma
Product: kwin
Version First 6.7.3
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-drm
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: ---
Created attachment 194776
--> https://bugs.kde.org/attachment.cgi?id=194776&action=edit
qdbus file
Hardware cursor is permanently offset by approximately 5 pixels to the right
and bottom of the actual cursor drawing. The offset is constant across the
entire screen and affects both the Plasma desktop and games.
Forcing the software cursor via KWIN_FORCE_SW_CURSOR=1 fixes my issue.
STEPS TO REPRODUCE
1. Single monitor: Philips Evnia 49M2C8900 (5120x1440 @ 240 Hz, HDR enabled)
2. Scale set to 100%
3. Observe that the actual cursor click is ~5 px bottom right of where mouse
cursor is
4. Enable KWIN_FORCE_SW_CURSOR=1 → offset disappears
EXPECTED RESULT:
Hardware cursor should be pixel-perfect aligned.
INFO:
Operating System: Arch Linux
KDE Plasma Version: 6.7.3
KWin Version: 6.7.3
Kernel Version: 7.1.5-arch1-2
Graphics Platform: Wayland
Graphics: Intel Arrow Lake-S iGPU + NVIDIA GeForce RTX 5090 (hybrid)
Mesa: 26.1.6-1
Single output (DP-4), Geometry 0,0 5120x1440, Scale 1, Overscan 0
HDR enabled, VRR set to Automatic
No fractional scaling, no multi-monitor setup
Offset is identical everywhere (desktop UI and games)
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