Created attachment 83713 [details]
Greps from dmesg for "drm" and "radeon"
I'm receiving massive screen corruptions on my Radeon HD 6870 when I use dpm on
an rc1/2/3/4 kernel with the following symptoms:
There's flickering all over the screen, artifacts and after trying to open
anything related to graphics (glxgears, animated menus in KDE, etc...) the
machine freezes and can only be revived with a hard reset. Sometimes the
machine doesn't even get so far and freezes immediately before. This is
accompanied by a black screen or blue lines on the screen.
The huge issue is: there's absolutely no error in dmesg and dpm is also
automatically set in power_method
I'm including grep'd dmesg's for "drm" and "radeon" anyways, to illustrate that
everything seems to load fine.
More information about the card and my system: XFX Radeon HD 6870 Black Edition
with stock bios on an Arch Linux 64 bit system.
I'm using the newest mesa-git, libdrm, xf86-video-ati-git and ati-dri-git.
It's nearly impossible to gather more information than dmesg, because the
system is extremely unstable when using dpm.
When I'm NOT setting radeon.dpm=1 the system boots fine, has 3D acceleration
and I've not a single issue with my graphics stack.