https://bugs.kde.org/show_bug.cgi?id=511090
Bug ID: 511090
Summary: Mouse cursor corrupted (dotted/squares) when using
llvmpipe on AMD Mullins APU (Regression from 6.3.5)
Classification: Plasma
Product: kwin
Version First unspecified
Reported In:
Platform: Neon
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: decorations
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
**Title:** Severe Mouse Cursor Corruption (Dotted/Squares) on KDE Plasma 6.5
Wayland with llvmpipe
**Summary of the Issue:**
After updating KDE Plasma from version 6.3.5 (where everything was working
fine) to version 6.5.x, the mouse cursor is corrupted under a Wayland session.
Instead of the intended cursor theme, it displays only as a series of **dotted
squares or pixel artifacts**.
**Technical Details:**
This issue occurs specifically because the system is forced to use the software
rendering driver, **llvmpipe**, instead of the dedicated AMD driver. This
likely happens due to an issue with the GPU detection or driver loading for the
**AMD Mullins APU** under the newer Plasma version. The previous version
(6.3.5) handled this fallback scenario correctly.
**Key Point (Regression):**
The cursor was rendered perfectly fine in **KDE Plasma 6.3.5** with the exact
same hardware configuration (AMD Mullins / llvmpipe / Wayland). This strongly
suggests a **regression** was introduced in KWin/Plasma 6.4 or 6.5 regarding
how it handles the software cursor rendering path.
**Temporary Workaround:**
The issue can be temporarily fixed by setting the environment variable
`KWIN_FORCE_SW_CURSOR=1`.
--
You are receiving this mail because:
You are watching all bug changes.
