I have a macbook air mid 2011 but airplay mirroring does not show up
According to the apple site, I have the right hardware (macbook air mid 2011) and 3rd generation Apple TV to support airplay mirroring, but the laptop does not show the airplay mirroring option in the system preferences > display options window.
All the specs say this functionality should be supported - any body have any idea why it appears to not be supported?
MacBook Air, OS X Mountain Lion (10.8.3)