https://bugs.freedesktop.org/show_bug.cgi?id=66963
--- Comment #129 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #128)
Recently tried kernel 3.11.1. Still not booting with radeon.dpm=1. Patch still isn't there for HD2600 ?
I sent the pull request that contained attachment 85256 to Dave last week so it will probably be merged to 3.12 at some point this week and them end up in 3.11 sometime later.