A colleague of mine bought a brand new MacBook Pro Retina. She wants to use it in lectures in connection with a projector. I can't tell what brand the projector is of since it is a very big lecture hall. But it is definetly a good and expensive one. So I don't think the following problem occurs on that end of the connection:
Whenever she connects her MBP to the projector with a HDMI cable, the MBP seems to detect it and changes its resolution. But the display on the wall stays black no matter which resolution I choose in the system preferences.
Has anybody experienced something similar? Could it be a problem with the color profiles?