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  1. #1

    Member Since
    Apr 14, 2008
    Question MBP doesn`t recognise the external monitor

    I`ve got a problem with my MBP. I use DVI-VGA connector. At the moment of connecting my laptop to the external screen, it seems like the MBP doesn`t see the monitor. MBP blinks once and nothing happens next. When I reboot a MPG and the monitor is already connected, it does recognise it immediately. Any ideas what`s wrong with the MBP? Is it a problem with either MBP or DVI or the monitor?

  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
    Are you running on battery or from the AC mains? MacBook and MacBook Pro will not show an external display when operating on battery.

    If you're on AC and the MBP does not "see" the external when you hook it to the DVI port, it could be you haven't selected "detect displays" from System Preferences, Displays. Try that before rebooting.


  3. #3

    Dysfunction's Avatar
    Member Since
    Mar 17, 2008
    Tucson, AZ
    Way... way too many specs to list.
    Do you have the connector connected to your laptop first, or two the VGA cable of the monitor first? If you're connecting it to the laptop first, then yes it will not see the monitor (it's not there) try connecting it to the monitor cable first, then plugging it into the laptop.
    This machine kills fascists
    Got # ? phear the command line!

  4. #4

    Member Since
    Apr 14, 2008
    thanks mates, but nothing works so far. i`m frustrated

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