I have MacBook Pro (Retina, 13-inch, Mid 2014) and also a third generation Apple TV. Lately, especially after 10.10.3 update for OS X Yosemite, I am having mirroring issues.
I have checked all the links, forums etc on google and still no luck.
The problem is basically, my ipad 2/iphone 5 can successfully mirror to Apple TV, but when I try to mirror my MBP, it only shows black screen with audio..
I cannot control the apple tv settings from my menu bar on MBP either. It does not let me choose whether to extend my desktop or mirror built-in display.
On web, I read forums with similar questions but they are generally left unanswered or did not work for me.
Thanks in advance xxx