Comment # 21 on bug 43655 from Alexandre Demers

So I'm trying to narrow down what is going on. Kernel 3.5 + patch 64759 works
OK. I'm now testing kernel's commit 81ee8fb6b52ec69eeed37fe7943446af1dccecc5
that was supposed to supersede patch 64759 in kernel 3.6. I'll see what I get.

My feeling is we are not saving/restoring an address (VM, VRAM, TTM, whatever)
correctly somewhere along the path.