https://bugs.freedesktop.org/show_bug.cgi?id=73053
--- Comment #1 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #0)
The monitor goes blank, and the system becomes totally unresponsive as soon as the radeon module is loaded, if I boot 3.12.4 with radeon.dpm=1 or I boot 3.13-rc5 without radeon.dpm=0.
Did dpm ever work on your board? Just to clarify, does 3.13-rc5 fail to boot even with radeon.dpm=0? Please attach a copy of your dmesg output, Xorg log, and vbios. To get a copy of your vbios: (as root) (use lspci to get the bus id) cd /sys/bus/pci/devices/<pci bus id> echo 1 > rom cat rom > /tmp/vbios.rom echo 0 > rom
Bug #66963 might be related.
Unrelated. That bug is about rv6xx asics. Your chip is a BTC part.