Using new Macbook Air, fully loaded. Installed BackTrack 5 R1 to bootable SD card. No video at all from laptop screen. When using external monitor, I can get into X, but the OS is unable to change or use the full native resolution of my monitor. Same problem when booting from live USB. No problems if I install BT5R1 into Parallels. Anyone have a fix so I can run it natively?