Seems this has been covered a little.. check out the post from frostcall on the page below...
viewtopic.php?f=54&t=24547&start=20
Seems 2 ports work oob... the displayport and the dvi port next to the hdmi out.
Looks like some of us will have to invest in another stupid adapter! Maybe one...
Same problem with my XFX Radeon 6850. Fiddling with it, I managed to get a mirrored boot, with the apple logo on both screens, then the second monitor drops out the instant the OS comes up.
I'll keep fiddling. The system is aware of the ports, as it lists them in "about this mac," but saying...
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