[Bug 77256] Mesa has to be downgraded to version 8 with KDE

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77256

Kenneth Graunke <kenneth at whitecape.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #1 from Kenneth Graunke <kenneth at whitecape.org> ---
Thanks for the information!  Having to downgrade all the way to Mesa 8 strongly
suggests multisampling is at fault.

Although we suspect multisampling is broken, KWin and Unity really don't want
to be using multisampling.  The reason they're getting MSAA is due to a GLX bug
in the X server, which chooses random visuals/fbconfigs that sometimes have
really undesirable properties.  This is fixed in X server 1.15.1 and 1.14.6.

As an alternative, you can try running KWin with EGL:

    KWIN_OPENGL_INTERFACE=egl kwin --replace &

*** This bug has been marked as a duplicate of bug 77207 ***

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