Supporting virtual reality displays in Linux

Not great for Linux currently, but in a world where the drivers worked for everyone it would be great.

By connecting the high power discrete card to the external port, it removes the copy latency Optimus has and does it in the case where the laptop is most likely plugged in. It also allows the Nvidia card to directly control the port, which means G-Sync is possible. I don't know if they enabled it, but it is possible.