Created attachment 83443 [details]
[AMD/ATI] RV635/M86 [Mobility Radeon HD 3650] vbios

Booting with kernel compiled from
http://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-fixes-3.11 setting
radeon.dpm=1 results in the mentioned "frosting", with the machine becoming
totally irresponsive. This happens during modesetting.
Tried to boot 3 times, all of them the same problem.
Trying with radeon.dpm=1 and radeon.aspm=0 gives the exact same result. 3 out
of 3 times I get the crash.
I am attaching my vbios too.