I was testing kernel 3.11.0-rc5 and ended up with my display freezing after
login (2 tests: one this morning, one tonight). It always freezes when dpm=1,
but it doesn't if disabled.

The result on my screen looks like screenshot posted in bug 66963
(https://bugs.freedesktop.org/attachment.cgi?id=83470)

So I connected through ssh and I got some error in dmesg just after display
froze. I'll be attaching my errors.log file in a moment. You'll see 

VM is also enabled. I could try without it.

Also, it doesn't freezes with commit 69e0b57, I've been using and testing it
regularly for the last week and half. So I could bisect if we don't have enough
info.