https://bugs.freedesktop.org/show_bug.cgi?id=89534
--- Comment #3 from John john.ettedgui@gmail.com --- I have tried various combinations of Linux and Mesa with no better result, so I'm *guessing* it is not a regression but something that never worked.
I've tried Linux 3.14.5, 3.19, 3.19.1 and 4.0rc1 to 4.0rc3. I've tried Mesa 10.1, 10.2, 10.3, 10.4 and git (with the corresponding llvm builds).
I have more dmesg saved, but I am not sure if they would be helpful, especially using older versions...
I'm out of ideas of what to try now...