https://bugs.kde.org/show_bug.cgi?id=435467
Bug ID: 435467
Summary: KWIN_DRM_DEVICE no longer supported
Product: kwin
Version: git master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: platform-drm
Assignee: kwin-bugs-n...@kde.org
Reporter: mgraess...@kde.org
Target Milestone: ---
SUMMARY
KWin used to support an environment variable to overwrite the selection of
which drm device to use. This got lost in commit
https://invent.kde.org/plasma/kwin/-/commit/b50f7478769c1b50b48d5f0e9201a8e4b7e275ef
STEPS TO REPRODUCE
1. Use weird vivante hardware with a card0 and a card1 which doesn't support GL
on /dev/dri/card0
2. specify KWIN_DRM_DEVICE to point to /dev/dri/card1
OBSERVED RESULT
/dev/dri/card0 is used and KWin doesn't work
EXPECTED RESULT
/dev/dri/card1 is used and KWin works
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