Problem using v2 Drivers on Macbook Air (2013 - OSX 10.8.4) when closing the lid
 

Hi.
i have a strange problem here.
Anything works fine when the macbook air is open.
But when i close the lid to use only 2 TFTs (like it works perfect with the windows drivers in the bootcamp Win 7) the TFTs are switching on and off and on and... after a few seconds until i open the lid again.

How can i fix that? There is no setting within the energy settings like on win 7 in OS X 10.8. any more.

Thanks
Cubic