Airplay is working fine, that is, until I start it up under DVD Player.Then I immediately get a checkerboard pattern, until I stop Airplay. The movie runs fine without Airplay. Everything outside the DVD is mirrored fine.
Ok well I'm going through DVD's now and I just inserted a disc made with imovie and idvd and it shows these symptoms. I'm guessing that it would have no DRM on the disc. I shut off airplay mirronring and that did not help.