Could you try to start these settings programs from the command line? For example this: gnome-appearance-properties
This should give you a window where you could set the desktop effects. Post the information that is printed in the terminal. That might help.
Could you try to start these settings programs from the command line? e-properties
For example this:
gnome-appearanc
This should give you a window where you could set the desktop effects.
Post the information that is printed in the terminal. That might help.