https://bugs.kde.org/show_bug.cgi?id=443953
Bug ID: 443953
Summary: Black screen with GLES compositing on LLVMpipe
Product: kwin
Version: 5.23.0
Platform: openSUSE RPMs
OS: Linux
Status: REPORTED
Severity: grave
Priority: NOR
Component: platform-x11-standalone
Assignee: kwin-bugs-n...@kde.org
Reporter: fab...@ritter-vogt.de
Target Milestone: ---
KWin using GLES uses EGL and it requires some EGL_image extensions, which are
not provided by Mesa-LLVMpipe, so compositing fails to initialize.
Before 5.23, it would fall back to XRender compositing and work properly.
With 5.23, it is unable to start compositing because XRender got removed, and
so it disables compositing.
Now it however fails to disable compositing properly, and the screen stays
black forever, probably because either the overlay window is not properly
removed or xcb_composite_unredirect_subwindows is not called.
It works when disabling compositing explicitly, so that kwin doesn't even
attempt to initialize it.
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