Comment # 8 on bug 62889 from Alexander von Gluck

Thanks for the input.

I disabled colortiling and installed xfce.. success!

It seems like Gnome 3.6 won't work unless color tiling is enabled. I double
checked the gnome session logs and don't see the previously mentioned error
anymore.. just a blank desktop wallpaper across both monitors.  I erased the
gnome config files in .local without any success.

I ran a glxinfo from .xinit, and it does confirm that Gallium is in use.
(attached)