Comment 29 for bug 408065

I think there needs to be some tweaking in cairo-dock too for OpenGL version to work for ATI cards.
the sluggishness will be taken care of by the xorg

Below is the output is get when i run from the terminal:

~$ cairo-dock -o
warning : (cairo-dock-draw-opengl.c:cairo_dock_get_opengl_config:1690)
  couldn't find an appropriate visual ourself, trying something else, this may not work with some drivers ...
warning : (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:327)
  while opening module '/usr/lib/cairo-dock/libcd-xfce-integration.so' : (libthunar-vfs-1.so.2: cannot open shared object file: No such file or directory)
gtk_widget_get_gl_context: assertion `GTK_IS_WIDGET (widget)' failed
OpenGL version: 1.5 Mesa 7.6-devel
OpenGL vendor: DRI R300 Project
OpenGL renderer: Mesa DRI R300 (RV515 7145) 20090101 x86/MMX/SSE2 TCL DRI2
if your drivers are crappy, we'll know it immediately ... ok, they seem fine enough.
warning : (cairo-dock-config.c:cairo_dock_get_double_key_value:172)
  Key file does not have key 'scroll speed'
warning : (cairo-dock-config.c:cairo_dock_get_double_key_value:172)
  Key file does not have key 'scroll accel'
cairo_dock_replace_values_in_conf_file (/home/vish/.config/cairo-dock/current_theme/plug-ins/rendering/rendering.conf)
cairo_dock_replace_key_values (0)
g_key_file_has_key: assertion `key_file != NULL' failed
warning : (cairo-dock-keyfile-utilities.c:cairo_dock_flush_conf_file_full:72)
  Couldn't find any installed conf file
cairo_dock_replace_values_in_conf_file (/home/vish/.config/cairo-dock/current_theme/plug-ins/dialog-rendering/dialog-rendering.conf)
cairo_dock_replace_key_values (0)
cairo_dock_replace_values_in_conf_file (/home/vish/.config/cairo-dock/current_theme/plug-ins/Animated-icons/Animated-icons.conf)
cairo_dock_replace_key_values (0)
drmRadeonCmdBuffer: -22

And OpenGL version wont start.

~$ cairo-dock -c
warning : (cairo-dock-modules.c:cairo_dock_preload_module_from_directory:327)
  while opening module '/usr/lib/cairo-dock/libcd-xfce-integration.so' : (libthunar-vfs-1.so.2: cannot open shared object file: No such file or directory)
warning : (cairo-dock-config.c:cairo_dock_get_double_key_value:172)
  Key file does not have key 'scroll speed'
warning : (cairo-dock-config.c:cairo_dock_get_double_key_value:172)
  Key file does not have key 'scroll accel'
cairo_dock_replace_values_in_conf_file (/home/vishnoo/.config/cairo-dock/current_theme/plug-ins/rendering/rendering.conf)
cairo_dock_replace_key_values (0)
g_key_file_has_key: assertion `key_file != NULL' failed
warning : (cairo-dock-keyfile-utilities.c:cairo_dock_flush_conf_file_full:72)
  Couldn't find any installed conf file
cairo_dock_replace_values_in_conf_file (/home/vishnoo/.config/cairo-dock/current_theme/plug-ins/dialog-rendering/dialog-rendering.conf)
cairo_dock_replace_key_values (0)
cairo_dock_replace_values_in_conf_file (/home/vishnoo/.config/cairo-dock/current_theme/plug-ins/Animated-icons/Animated-icons.conf)
cairo_dock_replace_key_values (0)

Non-OpenGL Starts and works fine.