Bug 511017 - Cursor appears as “pixelated mess” on AMD GPU in Plasma 6.5 Wayland session
Summary: Cursor appears as “pixelated mess” on AMD GPU in Plasma 6.5 Wayland session
Status: RESOLVED DUPLICATE of bug 510930
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (other bugs)
Version First Reported In: 6.5.0
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-10-24 13:10 UTC by catwalk.molecular237
Modified: 2025-10-24 16:33 UTC (History)
1 user (show)

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Description catwalk.molecular237 2025-10-24 13:10:41 UTC 
After upgrading to Plasma 6.5 on Arch Linux with Mesa 25.2.5 and a Radeon HD 7850 GPU, the mouse cursor becomes completely pixelated (“kasha”) in a Wayland session.

Plasma version: 6.5.0

KWin version: 6.5.0

Mesa version: 25.2.5-1

GPU: Radeon HD 7850

Session type: Wayland

The cursor is normal under X11, and changing cursor themes in System Settings has no effect. Restarting Plasma or SDDM does not fix it.

This appears to be a regression in KWin Wayland cursor rendering on AMD/Mesa, likely related to hardware cursor composition.

Steps to reproduce:

Upgrade to Plasma 6.5 on Arch Linux with AMD GPU and Mesa 25.2.5.

Log in to a Wayland session via SDDM.

Observe that the cursor is fully pixelated.

Expected behavior:
Cursor should display normally, as it does under X11.

Actual behavior:
Cursor is fully corrupted (“pixelated mess”) and unusable.
Comment 1 Nate Graham 2025-10-24 16:33:06 UTC 

*** This bug has been marked as a duplicate of bug 510930 ***