Comment # 29 on bug 69723 from Alexandre Demers

Just in case, I went back in time for bisection between v3.11 and v3.10, began
at commit 69e0b57a91adca2e3eb56ed4db39ab90f3ae1043 when dpm was implemented on
Cayman. I applied patches from bug 68235 so I could run without display
hanging. I've been running videos, daily tasks and piglit runs without a crash.
I'll move forward and see if I can find something that could help us explain
the hangs happening since v3.11.0.