Bug#523467: xserver-xorg-video-radeon: All draws are very slow after update to 1:6.12.2-1

[Julien Cristau]

On Fri, 2009-04-10 at 15:38 +0200, Alex Dănilă wrote:
> Package: xserver-xorg-video-radeon
> Version: 1:6.12.2-1
> Severity: important
> 
> *** Please type your report below this line ***
> Since today's update to unstable of the radeon driver drawing is very 
> slow for everything:
> -scrolling
> -selecting text
> -video
> -show window from background, move, resize, change virtual desktop and 
> even the KDM login menu takes a second to draw.
> 
> Every redraw is visible, from the upper part of the screen to the lower 
> part, except for games, where it appears only on portions of the window.
> 
> The exact same thing happens when loading radeonhd.

Please provide the output of:
cat /proc/mtrr
and
dmesg|grep mtrr

Thanks,
Julien