Second Display Issue

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

  1. xApexPredator macrumors newbie

    Sep 27, 2011
    Darlington, England
    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

  2. robgendreau macrumors 68040

    Jul 13, 2008
    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?

Share This Page