Radeon mobility X300 with acceleration; right side of desktop, missing columns

[Alex Deucher]

On Thu, Nov 19, 2009 at 4:28 AM, Matthew Brett <matthew.brett at gmail.com> wrote:
> Hello,
>
> I think I am writing for advice in how to do a better job of this bug report.
>
> In summary, I am getting odd behavior on the right hand side of my
> dual monitor desktop, new since a karmic koala install.
>
> On one occasion this involved a scrambled screen on the right side of
> the external monitor; it always involves lost characters on emacs GTK
> screens (graphic attached).  On the graphic you can see the left hand
> emacs window showing the full text, and the right-hand window mainly
> blank, being truncated at a set position on the screen.
>
> I don't get this problem with the emacs-x11 (v22) build.   The same
> GTK build of emacs works without problem on an nvidia setup on a
> desktop elsewhere.
>
> I have a Radeon X300 in a Thinkpad T43 laptop, running default
> resolution on the LCD (left), VGA (right) of 1400x1050, 1920x1080
> respectively.

Disable compiz.  The max texture size on your hardware is 2048x2048,
your desktop is larger than that, so the behavior beyond the limits is
undefined.

Alex