When using the radeon.lockup_timeout=0 eglinfo (and every other egl apps) never
finishes, probably waiting for a fence, but I still can switch tty. That's with
kernel 3.12+ (otoh with 3.14.3 if I try to run a egl app, I have garbage on
display and my monitor shutdown, and is never brought up, there is probably
others issues introduced after hawaii commit as suggested)

The radeon_fence_info are the same between several run.