mini displayport video output problem

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

  1. zamJamLamFamBam macrumors newbie

    Dec 6, 2011
    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

    Sep 10, 2008
    Asheville, NC
    Try a different adapter. Try a different computer.

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