https://bugs.kde.org/show_bug.cgi?id=520869

Mohammed <[email protected]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDSINFO                   |REPORTED
         Resolution|WAITINGFORINFO              |---

--- Comment #2 from Mohammed <[email protected]> ---
SOFTWARE/OS VERSIONS

Operating System: TUXEDO OS

KDE Plasma Version: 6.5.2

KDE Frameworks Version: 6.19.0

Qt Version: 6.9.2

Kernel Version: 6.17.0-119029-tuxedo (64-bit)

Graphics Platform: Wayland


Graphics Processor 1: NVIDIA GeForce RTX 4060 Laptop GPU

Graphics Processor 2: IntelĀ® Graphics

Additional Information:

The issue occurs on KDE Plasma 6 Wayland with hybrid Intel + NVIDIA graphics.

While investigating a Chromium performance/rendering issue, I repeatedly
observed the following message in the system logs:

kwin_wayland_wrapper: error in client communication

The issue is reproducible.

Related observations:

 Firefox under Wayland performs normally.
Chrome under Wayland shows severe performance degradation in the affected
workload.
Chrome under X11 performs significantly better.
Forcing Chrome to use the NVIDIA render node can produce:

libwayland: error 7: importing the supplied dmabufs failed


followed by

Trace/breakpoint trap (SIGTRAP)


I am not sure whether the root cause is in Chromium, KWin, DMA-BUF handling, or
the NVIDIA/Wayland interaction, but I wanted to provide the complete system
information requested and the relevant KWin log message for investigation.

Setting bug status back to REPORTED as requested.

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