Phoronix: Mobile GPU Switching With X.Org & Linux?

One of the most recent innovations on the mobile front has been integrating two graphics processors into a notebook but not for binding them together via SLI or CrossFire but for real-time GPU switching. This technology though isn't supported on Linux, at least not yet. Intel's Centrino 2 and AMD's Puma platforms support having an integrated graphics processor and discrete graphics processor...

http://www.phoronix.com/vr.php?view=Njc2Nw