Windows 7 Screen Resolution with 24 ACD and new Mac Pro

Discussion in 'Windows, Linux & Others on the Mac' started by Greenhoe, May 5, 2009.

  1. Greenhoe macrumors regular

    Joined:
    Dec 17, 2008
    #1
    Hi,
    I just installed Windows 7 RC1 on my new Mac Pro with the 4870 and the 24 ACD. When I originally installed windows 7 the resolution was set correctly but now about 70% of the time when I start my Mac Pro and run bootcamp windows 7 won't recognize my monitor and just says Generic Non-PNP Monitor and will only give me a resolution of 640-480.

    I have to do a bunch of crap in the windows drivers updates to get this working correctly. At first I thought it was the 4870 drivers but I think its the ability that Windows 7 isn't recognizing the 24 ACD. When I do have it working at full resolution instead of saying Generic Non-PNP monitor it will say LED Monitor and give me all the different resolution settings.

    Anyone know what the problem is and how to fix it? Also why when I fix it after restarting the computer its back to not recognizing the monitor?
     
  2. Andrmgic macrumors 6502a

    Joined:
    Jun 27, 2007
    #2
    That is strange, I take it you installed the bootcamp drivers that came with your mac pro, right?

    When I put the beta on my aluminum macbook and connected to my LED cinema display it always picked it up correctly.

    I'd test the RC and report back for you, but I ended up returning the monitor due to dead pixel issues.

    Also, what drivers are you using for the HD4870?

    It could be a driver issue with the HD4870 preventing it from detecting the monitor correctly and assuming that it isn't capable of higher resolutions.
     
  3. Greenhoe thread starter macrumors regular

    Joined:
    Dec 17, 2008
    #3
    I'm using the Drivers that were installed with the Mac Pro install disc. I also have tried having Windows 7 find it's Windows version of the driver itself and install it which hasn't changed anything either. Should I try installing the Vista version of the Windows driver of the card from ATI?
     
  4. Andrmgic macrumors 6502a

    Joined:
    Jun 27, 2007
    #4
    I'd go get ATI's Catalyst 9.4 drivers.. they offer official windows 7 support.

    If those don't work, I'll see if I can find you a link for the 9.3 drivers.

    the catalyst drivers will give you a lot more control over the card, including adding supported resolutions and forcing it to detect displays whenever you open the catalyst control panel.

    Here's a link to the 9.4s -

    http://game.amd.com/us-en/drivers_catalyst.aspx?driver=VideoCard/win7-64-suite
     

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