Hi guys,
I'm having a similar problem to kevinjimenez03's.
I'm trying to connect only two monitors: one VGA-Only connected to the DVI-I (using an adaptor) and another monitor connected to the HDMI.
Everything goes well when connect only one of the monitors, but when I connect both at the same time it freezes OSX (no problems on Windows 7) as kevin/bdwhite described.
My experience seems to confirm bdwhitehead23 hypothesis, and I will try to connect my HDMI monitor to the DVI-D as soon as I grab a HDMI to DVI-D adaptor.
I have set the following boot options:
GraphicsEnabler=No
Graphics Mode=1920x1080x32
HDEFLayoutID=7C030000
Kernel Flags=npci=0x3000
UseKernelCache=No
I am running ML 10.8.3 with the most recent Nvidia GPU and Cuda drivers (304.10.65f03 and 5.0.45 respectively). I have tried the -f flag but with no success, I have not tried to boot in safe mode (-x flag) as kevin did.
besides the Gygabyte gyx670 OC I am running OSX on z77x-UD5H with a core-i5 cpu.
any suggestion?
cheers