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    VGA out in Windows XP does not work?

    Discussion in 'Apple and Mac OS X' started by ratiopharm, May 17, 2007.

  1. ratiopharm

    ratiopharm Notebook Enthusiast

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    Hello community,

    I am sure I missed some settings. When I attach an external VGA screen to my MBP 17" the external display remains black. However it's activated in my ATI settings. In OSX the external display works perfectly.

    Where is the mistake?

    Thanks a lot for help,

    Tobias
     
    ratiopharm, May 17, 2007
    #1
  2. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

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    Was the display plugged in when you booted the computer? If not , try that.

    John
     
    John Ratsey, May 17, 2007
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  3. ratiopharm

    ratiopharm Notebook Enthusiast

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    Does not change anything :-(

    Maybe one more thing: if I check the ATI "advanced" settings under "displays", my TFT is recognized correctly, even with the correct max. resolution etc. It just does not get a signal from the Macbook...
     
    ratiopharm, May 20, 2007
    #3
  4. passive101

    passive101 Notebook Deity

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    can anyone else confirm this?
     
    passive101, May 20, 2007
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  5. cashmonee

    cashmonee Notebook Virtuoso NBR Reviewer

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    I was able to use dual screens on my MBP. It could be an issue of how much the VGA will support on the MB. If you are trying to extend the desktop, you are probably going above the supported resolution, or at least the MB thinks you are. That's my only guess. Does it work mirrored?

    **EDIT** NVM, I am an idiot and did not read that you have 17" MBP. Although the same thing could cause the problem.
     
    cashmonee, May 20, 2007
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  6. ratiopharm

    ratiopharm Notebook Enthusiast

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    Does not work, neither mirrored nor extended (both work fine under OSX).
     
    ratiopharm, May 21, 2007
    #6