Composite manager causes graphic gliches

Marek Piechut mco at
Mon Jul 16 23:33:53 CEST 2007

Dnia Mon, 16 Jul 2007 21:38:49 +0300
Yogiz <yogizz at> napisał(a):

> Yesterday I finally got OpenGL to work with my Ati Radeon 9600SE with
> direct rendering. Although glxgears and fgl_glxgears scores were
> extremely low a few games I tried worked rather well. Then I decided
> to start using composite to archive real transparency on my Xfce
> desktop. After inserting both 
> Section "Extensions"
>         Option "Composite" "Enable"
> EndSection
> and
> Option "AccelMethod" "exa"
> in my xorg.conf I restarted the computer and activated CM. The
> transparency started working, but numerous gliches came with it. Lots
> of them can be seen on included screenshots.
> Basically most menus are almost impossible to read, a white pattern
> appears in the left side of the screen when a panel in the right side
> is brought back from auto-hide, screen lock no longer hides the screen
> but leaves everything visible, from the starting splashscreen, only
> the animating part is visible and in mail client, most forms are
> invisible until clicked on (as with menus).
> I hoped that maybe someone here can help me in the right direction as
> I'd like to get this working the right way. When I disable Option
> "AccelMethod" "exa" but leave the other one, nothing changes. When I
> disable both, everything's normal.
> Also a couple of times after turning on CM, my CPU usage has jumped on
> 100% and stayed there. Don't know if that's related.
> Thanks in advance.


If you have a newer radeon than 9250 and using xorg radeon driver you
have no hardware acceleration. Check output from glxinfo and look if
you have direct rendering and if your renderer is not Mesa indirect.
For acceleration you can try closed Ati driver - fglrx.

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