I've got a brand new configuration on which I can't activate dual graphics. The option is not available in CCC. Here is my configuration :
SAPPHIRE Radeon HD 6670 1GB GDDR5 Low Profile
4G of Ram, PC12800 -1600 MHz
As stated in my mobo manual, in order to enable dual graphics, in GFX configuration I set Primary video device on NB PCIe Slot video, Integrated Graphics on "Force" and UMA Frame Buffer size on 512M
Then I installed all latest drivers and tadaa : no dual graphics option.
So, I tried to put Primary video device on IGD : no dual graphic
I Tried to put UMA Buffer on 1G, didn't work
I have uninstalled/re-installed the drivers : didn't work
So I have uninstalled again using the clean uninstall utility but It didn't work
Note that both the GPU and APU actually are detected and appears in CCC. Under information->hardware, I've got the GPU as "Primary Adaptator" and the APU as "Enabled adaptator"
Driver Packaging Version : 14.10.1006-140417a-171099C
Catalyst Version : 14.4
AMD CCC Version : 2014.0417.2226.38446
Can anyone please help me ?