Get screens list on mac with thunderbolt

I’m trying to get a list of available screens with Screen.screens on my macbook pro 10.7.2 with an external monitor connected via thunderbolt.

The problem is that only the laptop’s monitor show up… not the external monitor. The only logic I see is that the thunderbolt port is not being recognized as an output of the graphics card.

Does anyone know what’s going on?

I’ve asked in the Adobe forums with no answers… don’t even know if this is a bug or expected behavior.

I’m compiling with Air 2.7.