Hello, I need some help.... I'm having some problems with the Graphic Card Acceleration, the intel hd4000 works fine but I need to use the other graphic card for games and I think is not working properly or is taking only the HD4000 for the Graphics Acceleration, the other problem is the backlight bright control, I can't control it, it's just on the max brightness. And on boot (verbose mode) says something about not enough current on the USB.
Send me MacBook-Air-de-Test.zip