Comment 41 for bug 768184

Well, I would've loved to test it, but I just tried kernel 3.1-rc10 and with vanilla xf86-video-intel 2.16.0 the kernel still crashes for me on enabling an output via xrandr. I assume it's due to the infamous kernel bug 24982, which has probably been open for a year now with no resolution in sight, though with kernel bugzilla apparently still being down (pathetic), it's hard to tell.

For what it's worth, with your patch applied, the kernel seems to crash less easily for me than without it.