Comment # 3 on bug 89534 from John

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...