https://bugs.freedesktop.org/show_bug.cgi?id=70706
--- Comment #18 from Joseph Yasi joe.yasi@gmail.com --- I've also been seeing this with Xorg 1.15 and Mesa 10.2-devel and the Intel 2.99.910 driver with DRI3 enabled. It is very inconsistent. Logging in and out of KDE a few times, and eventually glxinfo works, but often I get: Error: couldn't find RGB GLX visual or fbconfig Error: couldn't find RGB GLX visual or fbconfig
Desktop effects with kwin work inconsistently as well.