[Bug 104762] Various segfaults/problems in qt/plasma

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=104762

--- Comment #2 from Christoph Haag <haagch@frickel.club> ---
Created attachment 136932
  --> https://bugs.freedesktop.org/attachment.cgi?id=136932&action=edit
systemsettings black

I think I have tried running with valgrind before. I tried valgrind with -Og
mesa rendering the black window, but no (relevant) errors comes up.

To describe one case:
I just tried a mesa debug build and everything worked normal.
Then with the same options, but a release build with additionally CFLAGS=-Og
CXXFLAGS=-Og renders systemsettings5 and plasmashell completely black. No
segfaults this time. Starting plasmashell and systemsettings with
MESA_EXTENSION_OVERRIDE=-GL_ARB_get_program_binary makes it display normally.
But starting it without the variable after that makes it black again. Deleting
the shader cache does not help in this case.

But after starting systemsettings5 with another mesa installation once, it
starts working normally with the mesa build that produced the black window just
before too.

It's possible the segfaults and the black windows are different problems but
they started happening at the same time.

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