Hi all, I'm using Alienware M17x R3 laptop with i7 2720QM CPU and AMD Radeon HD 9660M discrete card. The laptop is A+I mux'd architecture (i.e. manually switching between integrated/discrete graphics card). Unfortunately, AMD's close-source Linux driver doesn't support this arch any more, and the laptop's BIOS doesn't provide a graphics card selecting option. So I'm wondering if there's any way to turn off the integrated Intel GPU? Thanks!