I have a HP Pavilion g6 - 2301AX laptop. It has an A8 APU with AMD Radeon HD 7640 + 7670M Dual graphics. I recently installed Ubuntu 14.04 64bit and after installing latest AMD Catalyst, in the "Display Manager" section is showing my 7670M as
-. [Unknown Display] AMD Radeon HD 7600M Series
Also in the information tab, Control center is showing only the 7640 Integrated Graphics, and not the 7670M GPU. How should I install my 7670M card? I followed the BinaryDriverHowTo/AMD, but I can see only 7640.