Second display cannot be detected

Discussion in 'Mac Basics and Help' started by Graemephil, Apr 11, 2010.

  1. Graemephil macrumors newbie

    Joined:
    Apr 11, 2010
    #1
    I recently purchased an LG Flatron monitor to use as my second display for my MacBook Pro (unibody). I had it working with great results for about a week, but today when i plugged it in, the monitor is not detected. I have been looking through other's problems trying many of the same things, to no avail. Any other advice would be very much appreciated.

    This was the only other one i saw that was a problem similar to mine, though time seemed to have solved the problem:
    http://forums.macrumors.com/showthread.php?t=271099
     
  2. Repo macrumors 6502a

    Repo

    Joined:
    Feb 11, 2009
    #2
    Troubleshooting tips:
    1) Make sure the external monitor is set on the correct input
    2) Restart Macbook with and without external monitor connected
    3) Turn external monitor on/off while connected
     
  3. Graemephil thread starter macrumors newbie

    Joined:
    Apr 11, 2010
    #3
    Tried all of these several times, but nothing. All of the cords i'm using have been used for less than a week. When i plug in and unplug the MiniDisplay my Pro's screen will go blue for about a second, so it's sensing some sort of change.
     

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