MacPro Monitor goes On and off

Discussion in 'Mac Pro' started by iOgOgilby, Oct 3, 2018.

  1. iOgOgilby macrumors newbie

    Joined:
    Oct 3, 2018
    #1
    The monitor on my 2010 MacPro 5.1 goes on and off during use only. When idle, it stays on but as soon as I work with it, it goes to black and then back on and repeats until I stop using it. I've started from different Hard Drives and different OS but it does not fix. I'm thinking it's the Graphic Card but don't want to spend a lot to not fix the problem.
     
  2. W1SS macrumors 6502

    W1SS

    Joined:
    Aug 20, 2013
    #2
    It's a new mojave feature called 'Disco Mode Use'

    Just kidding, it's most likely GPU or cable related. You didn't mention the GPU you are using.
     
  3. bookemdano macrumors 65816

    Joined:
    Jul 29, 2011
    #3
    EDIT: Misread the symptoms. Yeah you should likely try another video card. You can find a used GT120 on eBay for $50 or so.
     
  4. iOgOgilby thread starter macrumors newbie

    Joined:
    Oct 3, 2018
    #4
    Well the problem was not the Monitor or the Graphics Card but a 3rd party USB light that had a defective USB Micro Connection. Would have never checked it but by mistake and I disconnected it and everything worked. Thanks for your good intentions but it's all fixed. I would like a recommendation of a new Graphics Card for 2010 MacPro 5.1 that does not require the added power. Thanks again.
     
  5. W1SS macrumors 6502

    W1SS

    Joined:
    Aug 20, 2013
    #5
    You are lucky the faulty USB light's connection did not damage your logic board, GPU or power supply.
     

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4 October 3, 2018