Created attachment 130849 [det=
ails]
Screenshot
I initially reported this bug with openSUSE and the KDE teams. It was
ultimately concluded that it's a problem with Mesa or the Radeon driver. As
such I was encouraged to post about it here as well. Links to the other bug
reports:
https:/=
/bugzilla.opensuse.org/show_bug.cgi?id=3D1033598
https://bugs.kde.=
org/show_bug.cgi?id=3D378663
In summary: This is a problem that affects Linux users running the KDE desk=
top.
After a recent openSUSE Tumbleweed snapshot, I found that KWin no longer
renders Aurorae themes. Other themes work fine however, and this only affec=
ts
Aurorae ones... Plasma also has no issues rendering desktop elements. The
problem happens both with and without desktop effects enabled.
The space where the titlebar and border should be becomes completely empty,
with no graphics or text or buttons showing. However the blur effect is sti=
ll
functional in those areas, and clicking and dragging on any window component
works correctly (even if they're invisible).
Today I found the culprit as well as a workaround, thanks to Martin Gr=C3=
=A4=C3=9Flin in
the same report on the KDE bug tracker. The issue only happens when using e=
gl
instead of glx as the backend of KWin. This can be modified by opening
~/.config/kwinrc in a text editor and changing:
GLPlatformInterface=3Degl
to
GLPlatformInterface=3Dglx
Anyone with a Radeon card should be able to reproduce this, by doing the
reverse of the above and switching their KDE desktop to egl. I understand t=
he
driver developers need to figure out what's breaking it, which hopefully wo=
n't
be difficult using this test case.