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  1. #1

    Telters's Avatar
    Member Since
    Jun 01, 2008
    13" MacBook Pro, iPhone 5
    Question External Display no sleep
    Hi there

    I just purchased an external display for my MacBook (white, July 2008), and whenever I close my MacBook (with the display connected), I get a blue screen (like the startup one), and it doesn't go away

    Is there any way I can make it so that once I close my MacBook, the display stays active (and I can do everything else with an external keyboard/mouse?)


  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Keller, Texas
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, High Sierra
    You're referring to what's known as operating your MacBook in "clam shell" mode. Take a look at the following Apple KB article for the how to. LINK

    BTW, in order to use an external monitor you must be on AC power not battery.


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