I know some cards dont' support OpenGL on the second monitor... If it works on the main screen area it should work on the second monitor, unless you have such a video card...
speaking of that...has anyone some experiences with laptop graphics-card (not running in clone mode) and the secondary monitor out. which cards give opengl and overlay modus on the external out?
once tried it with framestein and a nvida 440 go-something and that was
horrible slow, as you couldnt make the secondary monitor the primary. as i am about to buy a laptop, i don
t want to run into this situation...
thanks and greets