mini displayport video output problem

Discussion in 'MacBook Pro' started by zamJamLamFamBam, Dec 6, 2011.

  1. zamJamLamFamBam macrumors newbie

    Joined:
    Dec 6, 2011
    #1
    I have a late 2008 macbook pro with a mini displayport to dvi adapter.

    When I plug the adapter in to an external monitor or TV the laptop screen and the monitor sync for a second (both screens turn light blue before the the desktop shows up - the usual process) and then un-syncs again, over and over.

    almost like this

    I have tried an external monitor and a LCD TV, and used a dvi-dvi cable and a dvi-hdmi from the mini displayport-dvi adapter, same result.
    In the past I have connected my mbp to several tvs, monitors and all worked fine

    has anyone had any problems with this, or can they offer advice?
     
  2. Detrius macrumors 68000

    Joined:
    Sep 10, 2008
    Location:
    Asheville, NC
    #2
    Try a different adapter. Try a different computer.
     

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