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I run a 3 LG monitor system from an ATI Graphics card that has now lost the native settings and just see non PnP monitors

问题 I run a 3 LG monitor system from an ATI Graphics card that has now lost the native settings and just see non PnP monitors

  • Thursday, February 07, 2013 12:58 PM
     
     
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    Using win 7 64 bit and a ATI graphics card with three LG 2224 monitors all were running at hig res. 1920 x 1080.

    Now the system only sees 1 monitor as an LG and the 2 others a Non PnP and will not drive them at more than 1600 res.

    Have tried re - installing the LG drivers and have the latest ATI driver and control.

    Any bright ideas on how to bring back to life?

    Thanks

     

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  • Friday, February 08, 2013 9:38 AM
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    Hi,

    How do you connect the rest of monitors to display card? I mean the ports type? Do you use any convertor? If you are using HDMI, try to replace it with the one used by the recognized monitor.

    Only thing that comes to mind thus far is either:
     
    1) Marginal connection with the LCD cable. (open up and reseat it, may as well do a repaste if you go that far)
     
    2) Panel has a problem and needs replacement
     
    3) Vid card has an issue and needs replacement
     
    4) Bad LCD cable

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    Juke Chou
    TechNet Community Support

     
  • Friday, February 08, 2013 1:13 PM
     
     
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    Thanks for the notes:

    Two of the LG use a standard VGA cable  via a DVI - VGA converter and one comes from a Display Port on the ATI 5700 graphics card via a Display Port - VGA converter from StarTech. All was fine for a year.

    Will re-check the cables and connections. And connected the monitors to another Window machine to test them.

     
  • Monday, February 11, 2013 6:57 AM
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    Hi,

    I suppose the one using Display Port can be detected, the rest cannot. Right? Anyway, if you get any thing, please keep me updated.

    Juke Chou
    TechNet Community Support

     
  • Wednesday, February 13, 2013 1:51 PM
     
     
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    I have tested all 3 monitors with different cables. All work as VGA at high res. at 1920 * 1080

    I suspects the video card. But Dell claim it is perfect. So I have ordered a new active Display Port to VGA converter. Will see what that does.

    Thanks

    Alastair

     
  • Sunday, March 03, 2013 2:07 PM
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    Hi,

    Any update?

    Juke Chou
    TechNet Community Support