Lid closed with targetted display mode issue

Discussion in 'MacBook Pro' started by sfwalter, Jul 14, 2012.

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  1. sfwalter, Jul 14, 2012

    sfwalter macrumors 68000

    sfwalter

    Joined:
    Jan 6, 2004
    Location:
    Dallas Texas
    #1
    Hi,

    I'm trying to use my late 2009 iMac as a display for my 2011 Macbook Pro via display port-display port cable. It works fine when I have the lid open on my Macbook Pro. However when I close the lid the iMac display goes off after a few seconds.

    It seems like the Macbook Pro is going to sleep. Any ideas on how to prevent this. I have a wired keyboard and mouse connected to the Macbook Pro but the external display still goes to sleep.

    Any ideas on why this is happening?
     
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  2. tillsbury, Jul 14, 2012

    tillsbury macrumors 65816

    Joined:
    Dec 24, 2007
    #2
    Same here, using DP monitor, USB keyboard and mouse, screen goes blue when I shut the lid, but on reopening the display reappears but OSX crashes such that I need to hard power-off (holding the power button down) to recover. Can the MBPr not cope with running when it's shut?
     
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