OS X Kernel Panic / Crash with PC GFX Card

Discussion in 'Mac Pro' started by Firebar, Jun 11, 2010.

  1. Firebar macrumors member

    Joined:
    Nov 16, 2005
    #1
    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 :)
     
  2. lemonade-maker macrumors 6502

    lemonade-maker

    Joined:
    Jun 20, 2009
    #2
    No telling without knowing what the KP output is. If you can post the output, you might get some answers.
     
  3. Firebar thread starter macrumors member

    Joined:
    Nov 16, 2005
    #3
    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?
     
  4. 666sheep macrumors 68040

    666sheep

    Joined:
    Dec 7, 2009
    Location:
    Poland
    #4
    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.
     
  5. lemonade-maker macrumors 6502

    lemonade-maker

    Joined:
    Jun 20, 2009
    #5
    hold down command-v at boot. It will be visible then.
     

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