Need to switch from agp to isa-pci for graphics.

Discussion in 'PowerPC Macs' started by boogers, Nov 21, 2010.

  1. macrumors newbie

    Joined:
    Oct 8, 2010
    #1
    PowerMac G4 933MHz agp slot. I have Debian 5.x and FreeBSD 9.0 on the machine. The modules of agp and drm build only from current. With agp, this is not a problem; however, drm will not build due to a dependency on x86. Discussions on the freebsd-ppc mailing lists state that drm is unstable.
    The machine came with a Matrox card and the standard radeon. There is support for the Matrox with both OSes but I do not know how to switch the default graphics card in OpenFirmware. How do I do this from the forth prompt?
     
  2. thread starter macrumors newbie

    Joined:
    Oct 8, 2010
    #2
    I take it that no one knows how to do this from the forth prompt?
    The forth prompt is the open firmware prompt.
     
  3. macrumors regular

    Joined:
    Nov 21, 2010
    Location:
    Salem, OR
    #3
    Have you tried removing the agp card when booting or installing to force it to use the other card?
     
  4. thread starter macrumors newbie

    Joined:
    Oct 8, 2010
    #4
    It didn't work but, a genuine thanks for the help.
     
  5. macrumors regular

    Joined:
    Nov 21, 2010
    Location:
    Salem, OR
    #5
    Well it was worth a shot. Good luck on trying to get it
     
  6. macrumors 68000

    4JNA

    Joined:
    Feb 8, 2006
    Location:
    looking for trash files
    #6
    i don't have one to experiment with right now, but think the 'pull the AGP card' was the correct answer. after pulling the card, i think you would need to reset PRAM to get it to pick up the change. the video card/settings are stored in PRAM

    you can reset NVRAM and PRAM from open firmware using;

    0 > reset-nvram
    Press Return
    0 > reset-all
    Press Return

    The reset-all command should restart your Mac. If so, you have successfully reset the Open Firmware settings. best of luck.
     
  7. macrumors regular

    Joined:
    Nov 21, 2010
    Location:
    Salem, OR
    #7
    Keep us updated. I would love to know how it works out
     

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