Quote Originally Posted by osarusan View Post
This happened to me too, and the solution was simple.

Run
Code:
sudo aticonfig --initial
This will re-initialize your xorg.conf. Then when you reboot you should be able to active your 2nd monitor with
Code:
gksu amdcccle
and set it up correctly; or you may also be able to use the Ubuntu Display manager.
This works for me. I suspect that the "Special Sauce" was using ATI's configuration utility.

Setup;
  • Ubuntu 12.04.1
  • Asus Radeon HD 6770
  • Acer ?? 1920x1080 monitor (DVI)
  • Acer AL1717 1280x1024 (VGA)
  • Asus M5 A99X Evo