Dual Monitor setup?

[quotidian]

Spec:

3570k
z77-d3h
amd 7850

I've got 2 monitors and both of them use vga ports.

So in windows I just put one connector into the motherboard vga slot and the other into the graphics card vga slot. However I tried this and linux doesn't detect the monitor connected to the mother board.

I've tried installing both the amd and intel drivers but it still only uses the monitor connected to the graphics card?

 

[quotidian]

Have you enabled the IGPU setting in the BIOS?

I've got it set to "AUTO" which enables both of them as windows is able to use the IGPU and discrete gpu.