[Bug 66963] r600: linux 3.11RC isn't booting with radeon.dpm=1 option in grub

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66963

--- Comment #13 from Scias <shining.scias at gmail.com> ---
Unexpectedly the unpatched RC-2 just booted for me with the dpm=1 option while
I didn't change anything since the last time I tried. I just initially wanted
to try the new patches but forgot to remove the dpm=1 kernel argument from grub
and surprisingly it booted after a short screen "frosting up" !

Here's the drm/radeon dmesg log : http://pastebin.com/DxbddVMW

Changing power states works, however the power level doesn't seem to change and
always stayed at 1 (tried Unigine sanctuary and Minecraft) and can't be forced
either.

The GPU Temp was stable around 60 C, still hotter than Catalyst in low
performance mode but at least much better than before when it would just
endlessly rise until hard shutdown due to overheat.

Now the problem is that after rebooting after doing no change, it hung again
like before, I tried several times but it's still hanging, so I have really no
idea why it suddently worked once...

I will try the new patches now.

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