Compiz fails to start after an upgrade (software rasterizer in use)

[Adam K Kirchhoff]

> Hello Everyone,
>
> Hope I found the right list to ask for help.
>
> The last weekend I did my usual upgrade to my debian testing, and as a
> result compiz never started up again.
> I already asked for help on the debian list, but I believe that this is an
> Xorg issue.
>
> After running the compiz-check script I got the output:
>
> ------------------
> Distribution:          Debian GNU/Linux (squeeze/sid)
> Desktop environment:   GNOME
> Graphics chip:         ATI Technologies Inc M24 1P [Radeon Mobility
> X600]
> Driver in use:         radeon
> Rendering method:      AIGLX
>
> Checking if it's possible to run Compiz on your system...
>
> Checking for texture_from_pixmap...               [ OK ]
> Checking for non power of two support...          [ OK ]
> Checking for composite extension...               [ OK ]
> Checking for FBConfig...                          [ OK ]
> Checking for hardware/setup problems...           [FAIL]
>
> There has been (at least) one error detected with your setup:
> Error: Software Rasterizer in use
> -------------------
>

What does 'dmesg | grep drm' show?

Adam