https://bugs.kde.org/show_bug.cgi?id=498542
Bug ID: 498542
Summary: Kwin wayland and Mesa 24.3
Classification: Plasma
Product: kwin
Version: master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: pereira.a...@gmail.com
Target Milestone: ---
SUMMARY
Since the release of Mesa 24.3, Kwin wayland has issues with chromium/electron
wayland gpu acceleration, with an amdgpu card.
It works fine in Kwin if I downgrade Mesa to 24.2.x. In Hyprland, it works fine
with both Mesa 24.2 and 24.3.
In Mesa 24.2, chromium/electron apps have their GPU acceleration enabled, and I
test it on a 8K video that plays smoothly and without using much CPU.
With Mesa 24.3, all the GPU acceleration is disabled (on chrome://gpu) and 8K
video barely plays, using 100% CPU
On Hyprland, everything is fine with either 24.2 or 24.3.
STEPS TO REPRODUCE
1. Launch an chromium/electron app with the params listed bellow
2. Go to chrome://gpu or try to play a video
3. Check CPU/GPU usage
OBSERVED RESULT
GPU acceleration is disabled/not working
EXPECTED RESULT
GPU acceleration should work on Mesa 24.3, as it does on Mesa 24.2 and with
Mesa 24.3 in Hyprland
SOFTWARE/OS VERSIONS
Windows:
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma:
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
This issue happens with either plasma 6.2 or the new beta for 6.3.
The params I use to launch the chromium/electron apps:
```
export CHROMEPARAMS=" \
--ignore-gpu-blocklist \
--enable-gpu-rasterization \
--enable-oop-rasterization \
--enable-accelerated-2d-canvas \
--enable-quic \
--enable-smooth-scrolling \
--disable-features=Vulkan,DefaultANGLEVulkan,VulkanFromANGLE \
--enable-features=AcceleratedVideoEncoder,AcceleratedVideoDecodeLinuxGL,AcceleratedVideoDecodeLinuxZeroCopyGL,VaapiIgnoreDriverChe
cks,WaylandWindowDecorations,UseMultiPlaneFormatForHardwareVideo,FluentOverlayScrollbar
\
--gtk-version=4 \
--disable-gtk-ime \
--wayland-text-input-version=3 \
--enable-wayland-ime \
--ozone-platform-hint=wayland \
--ozone-platform=wayland \
--password-store=basic \
--touch-events=disabled \
--use-angle=gl \
--use-gl=angle \
"
export GDK_BACKEND=wayland
export QT_QPA_PLATFORM=wayland
export GTK_THEME=Breeze
export LIBVA_DRIVER_NAME=radeonsi
```
Thanks!
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