Why does do my screens occasionally go off then back on?

Discussion in 'MacBook Pro' started by oxband, May 6, 2012.

  1. oxband macrumors 6502

    Joined:
    Sep 10, 2009
    #1
    Occasionally, when I'm connected to my external monitor and doing dual screen, both screens go off and back on. It takes a second. Everything resumes as normal. But it's disconcerting. I havent been keeping a log, but it doesnt seem to happen with any regularity. Just at random times.

    Any thoughts?
     
  2. chipchen macrumors 6502

    Joined:
    Oct 30, 2002
    #2
    More than likely it's your computer thinking there's a change in the monitor setup (removing or adding a monitor). I assume it looks like if you just plug your monitor into your computer and it goes out for a second while it adds the second.

    Check your cables, make sure they're tight. If you're using an adapter, maybe you need to get a new one.
     
  3. oxband thread starter macrumors 6502

    Joined:
    Sep 10, 2009
    #3
    so it isnt necessarily a sign of a big problem? it doesnt bother me. im just worried maybe it's a sign of something larger.
     
  4. Interstella5555 macrumors 603

    Interstella5555

    Joined:
    Jun 30, 2008
    #4
    This is totally normal, the external display needs to detect the input, and the computer needs to detect the output.
     

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