X server not working ? or advanced options have bad config ?

When I try to change on option of keyboard hotkeys or the desktop change effect, a window open and displays (I display it in spanish first to translate it later):

No se han podido activar los efectos del escritorio utilizando las opciones de configuración que ha proporcionado. Los ajustes se restablecerán a sus valores anteriores.

Verifique la configuración del servidor X. También debería considerar cambiar las opciones avanzadas, en especial cambiar el tipo de composición.
**
Translation:**
Desktop effects could not be activated using the options of configuration that it has provided. The adjustments will be restored to his previous values.

Verify the configuration of the X server. Also you should consider to change the advanced options, especially change the type of composition.

Any one knows what this is about ?

Thanks

agunet74

I have the same issue for a long time. It means that there are issues with your video driver configuration or other things which needs to be corrected. How? I wish I know but didn’t get the time to search for it. Most probably taking a copy of the Xorg.conf and some other files and then start from a console view to reconfigure the driver. Maybe someone else can step in to help you. However there are some posts/stickies which discuss this as I recall. Anyway more info needs to be provided (like the content of your Xorg.conf and any error messages you can find related to this(/var/log/messages ) and other log files.
Good Luck!