My MacBook pro is not connecting to Epson projector via built in HDMI. I have no problem connecting via VGA and my thunderbolt adapter, but the HDMI is not working. The screen flashes as if an external display is connected.
MacBook Pro with Retina display, Mac OS X (10.6.6)
I am having the same problem. First on a new ViewSonic, which I sent back thinking it wasn't working. Now the same problem on my new Powerbook Mac with a new Epson projector. Apple support hasn't been helpful.