How Can i CrossFire HD5770 x 2 Hackintosh

[lastsoft]

Hello to all.

i just finished building my new hackintosh G5 and it looks and works great.
i used the z77x-ud5h , i7-3770, 24GB DDR3 Corsair, 128GB Toshiba Blade SSD(MBA)+2TB Seagate Baracuda x 2 , enermax 750W Modular at80, 4x90mm enermax bat blade fans.
and two 22in mag all aluminum monitors witch connected to 2 x HD5770 1024mb one is HIS the other is sapphire.
when I'm connecting them together and running win7, they works great. shows crossfire enabled.
when I'm switching to lion i just got a white screen on both cards/Monitors.
i tried every single connector on the cards side.
nothing changes.

is there any thing to do period to installing the cards?
any drivers?
i know that qe/ci works on one card.

thanks.

 

[samisnake]

try booting in with graphicsenabler=no

 

[lastsoft]

yes it worked....
graphics enabler=no

 

[jcartful89]

yes it worked....
graphics enabler=no

Have you checked to see if any there is any performance increase using two cards? I'd love to run a couple 6870s and see if it improves Final Cut Pro X.