Second Display Issue

Discussion in 'iMac' started by xApexPredator, May 17, 2014.

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  1. xApexPredator, May 17, 2014

    xApexPredator macrumors newbie

    Joined:
    Sep 27, 2011
    Location:
    Darlington, England
    #1
    I bought a 3 in 1 Mini DisplayPort Adaptor today and tried to hook up a new BenQ monitor to my iMac (early 2011) and I'm struggling to get it to detect it as a second display. I've tried restarting and unplugging it, I also tried Command-Option-PR on restart with nothing

    Any help would be appreciated, if its worth note, when I turn on my second monitor the mouse on the iMac freezes momentarily

    Thanks!
     
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  2. robgendreau, May 17, 2014

    robgendreau macrumors 68030

    Joined:
    Jul 13, 2008
    #2
    Does your computer support the refresh rate and resolution of the external monitor? Not all Macs will drive all monitors. Have you tried manually setting resolutions and refresh rates?
     
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