Bug#503208: xserver-xorg-video-ati: display corruption w/ Radeon 9600: "shaking" and debris

[Alex Deucher]

On Thu, Oct 23, 2008 at 10:34 AM, Diab Jerius <djerius at cfa.harvard.edu> wrote:
> Package: xserver-xorg-video-ati
> Version: 1:6.9.0-1+lenny4
> Severity: important
>
>
> After upgrading to lenny from etch, the X display exhibits frequent
> sideways "shaking".  It looks like the screen shifts right by about 30
> or so pixels, stops, leaves vertical bands, and then shifts back. The bands
> are mostly removed when the screen shifts left.
> It often leaves debris behind.  Additionally, typing also
> leaves debris.  When I move a window with debris, the debris follows.
> I've attached a couple of images with the debris. (bad1.png, bad2.png)
>
> If I turn off DRI, the frequency of the shaking decreases, and the nature of the
> debris changes.  It becomes random horizontal segments maybe 20-30 pixels
> high and about 100 or so wide. (see bad4.png)
>
> I tried switching EXA on, but this causes the X server to grab 100% of the
> CPU and results in a screen with full-screen horizontal and vertical lines
> with random spacing (no way to get a screen shot).

Does:
Option "ColorTiling" "False"
in the device section of your config help?

Alex