since installing unity can change grahics drivers

Hi,
I know how strange this sounds, normally on lubuntu I can go into software updates and additional drivers, I can then swap between Xorg and AMD 7650M. As I'm having an issue with Unity displaying a back window on scene I thought I'd click AMD priority drivers. I opened up my additional drivers and can see it's no longer clicked on either AMD or Xorg but now contains a fourth option ( first time ever ) that says "continue using manually installed drivers". This has only appeared since installing unity, also I can't check any another driver?
I'm slightly confused, is this a unity issues or has something else happened I'm unaware of ?
Does anyone know of a way to get rid of continue using manually installed drivers" so I can go back to using priority drivers?
Thanks

 

This seems unrelated to Unity.

 

You seem to have manually installed AMD driver, also the black window thing is a bug that AMD driver has.... resizing the window should show the window content.

Anyway to remove the driver open up terminal and do:
cd /usr/share/ati
sudo ./amd-uninstall.sh

and reboot the system.

 

Thanks for the advise. And the work round for the scene. The thing about installing manually I haven't, I'm a long time Linux user and swap between AMD and Xorg driver, because of some software I use on a regular basis. So thought ( though obvious wrongly ) that the .deb unity package must have installed latest drivers.