I'm quite sure I'm getting this as well. I'm however on a HD6850, so that'd be the r600 driver I believe? Anything I can do to help pinpoint the culprit? Some specs: OpenGL renderer string: Gallium 0.4 on AMD BARTS (DRM 2.46.0 / 4.8.7-xanmod9, LLVM 4.0.0) OpenGL core profile version string: 3.3 (Core Profile) Mesa 13.1.0-devel - padoka PPA Ubuntu Gnome 16.10 64-bit