OS X Kernel Panic / Crash with PC GFX Card

[Firebar]

Hi all,

I have a GT120 and PC ATI 4870 in my Mac Pro. It boots into Windows no problem and I can switch between cards & displays.

However, if I try to boot up in Mac OSX, monitor hooked up to GT120, it kernel panics on boot and I have to reset.

I have the GT120 in the lower PCI-E slot and the 4870 in the upper (if looking at Mac Pro stood up).

Has anyone come across this before?

Thanks in advance :)

[lemonade-maker]

Hi all,

I have a GT120 and PC ATI 4870 in my Mac Pro. It boots into Windows no problem and I can switch between cards & displays.

However, if I try to boot up in Mac OSX, monitor hooked up to GT120, it kernel panics on boot and I have to reset.

I have the GT120 in the lower PCI-E slot and the 4870 in the upper (if looking at Mac Pro stood up).

Has anyone come across this before?

Thanks in advance :)

No telling without knowing what the KP output is. If you can post the output, you might get some answers.

[Firebar]

The screen goes dark and it brings up that "You need to turn off your computer" notification. Is there a way to get underneath that and see what's really happening?

[666sheep]

It's nothing special. See 4870/4890 flashing threads, some PC cards are causing KP in OS X.
Flash your 4870 and you'll be able to use it in OS X and Win with no probs.

[lemonade-maker]

hold down command-v at boot. It will be visible then.