Hello,

I'm part of the Cairo-Dock Team.
We confirm this bug. There was the same problem with Intel graphic cards but 
all seems ok now (Ubuntu Karmic - 13 Aug 2009) (even with an Eeepc701 while 
having multiple visual effects and remains fluid!).

We think that this black background with ATI cards is due to this
function 'GL_EXT_texture_from_pixmap' in OpenGL. We suppose that the
composite support needs to be improved.

I don't know how can we help you but we can try to answer to all your
questions !

The problem is the same with Catalyst 9.7 (black background and some
artifacts in indirect rendering mode)

You can also test with an the indirect rendering mode :
   $ cairo-dock -o -i

Thanks to mac_v for having reported this bug. And thanks to Bryce for
having confirmed it !

PS : Our ppa is now activated : 
https://edge.launchpad.net/~cairo-dock-team/+archive/ppa
You can download sources code on Berlios 
http://developer.berlios.de/project/showfiles.php?group_id=8724 or on lp : 
https://launchpad.net/cairo-dock-core/+download and 
https://launchpad.net/cairo-dock-plug-ins/+download or via SVN 
(svn://svn.berlios.de/cairo-dock/trunk) but this development branch is 
transfering from svn to bzr in lp.

-- 
Artifacts with cairo dock 2.0 [openGL]
https://bugs.launchpad.net/bugs/408065
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