Sony Vaio with Sandy Bridge & Radeon dual GPU, would it work?

[daedaluz]

I've been eyeing the specs of new Vaio S-series and they look quite amazing for the price.

However, it has dual-GPU and unfortunately they're SB Intel HD & Radeon HD6470M. AFAIK, both are poorly supported GPU options. I'm positive SB issues will be ironed out eventually, but I have no clue about mobile Radeons.
Then there's another catch: Vaio has a hardware button that allows disabling the separate Radeon GPU manually without rebooting. Would that feature work in Linux as it does in Windows?

[AlbertP]

You are using the Intel only on Linux in the default configuration, but I recommend to set the BIOS/hardware to use only 1 card as that consumes less power. Switching cards easily is not yet possible.

I can't tell you whether that button will work.