https://bugs.kde.org/show_bug.cgi?id=456089
Bug ID: 456089
Summary: Kwin endlessly emits "Could not create drm
framebuffer!" warning on fullscreen Firefox video on
secondary GPU
Product: kwin
Version: 5.25.2
Platform: Other
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: openmail+...@siezi.com
Target Milestone: ---
STEPS TO REPRODUCE
1. Dual GPU setup: AMD discrete, main GPU and Intel integrated, secondary iGPU
2. Start Firefox on secondary iGPU (in my case "DRI_PRIME=1 firefox")
3. Play a video on e.g. Youtube and enter fullscreen mode for the video
OBSERVED RESULT
The system-log gets flooded with "kwin_wayland_drm: Could not create drm
framebuffer! Invalid argument" multiple times per second.
EXPECTED RESULT
The system-log shouldn't be flooded with messages.
SOFTWARE/OS VERSIONS
Firefox 102 in Wayland mode
Operating System: EndeavourOS
KDE Plasma Version: 5.25.2
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.5
Kernel Version: 5.18.7-zen1-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 12 × 11th Gen Intel® Core™ i5-11400 @ 2.60GHz
Graphics Processor: AMD Radeon RX 5500 XT
ADDITIONAL INFORMATION
The issue started after the update from plasma 5.24 to 5.25.
I toyed a little bit with the code and "drmModeAddFB2WithModifiers()" returns
"-22" in my case [1].
[1]
https://invent.kde.org/plasma/kwin/-/blob/34e14bb1eefbaed1a6018108677ef2619e02330e/src/backends/drm/drm_buffer.cpp#L143
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