Hey I've been experiencing an issue with my 3rd generation Apple tv since i installed Mavericks on my early 2011 MBP. When trying to enable the Apple TV as a secondary display, it tells me: Could not connect to "Apple tv" I can however use an App to get video onto the big screen with no problems. So just to make it clear, it is the full display mirroring that's acting up, and not the Apple tv in general. This is what i have done to try to fix it: Update Apple tv Restart it, then forget WiFi and reconnect. Restart Mbp, forget Wifi and reconnect. Could this possibly be related to Mavericks new "way" of handling things with multiple displays? Does anyone know how to fix this?