So I am using
gksu amdcccle to make changes but for some reason whenever I select the 'Multi-display desktop with display(s)' option to extend my desktop the changes never save on restart or re-log. The odd thing is that other changes I make, like enabling tear free desktop seem to save and work fine. Another thing, when I log out the user/password box is only on 1 screen with just a wallpaper on the other implying the extended display options are working correctly, but as soon as I log back in they go back to mirrored.
I am on the proprietary fglrx drivers installed using the additional drivers method on Ubuntu 13.10 with a HD 5870.
I am pretty new to Linux, any help would be much appreciated. Let me know if I left out some important information.