External monitor troubles

Discussion in 'MacBook Pro' started by spellingace91, May 11, 2010.

  1. spellingace91 macrumors newbie

    Joined:
    May 11, 2010
    #1
    Hello all,

    I have a Samsung SyncMaster 2253BW 22" monitor and a 15" mid-2009 2.53 GHz MacBook Pro that I've been trying to use together via the VGA adapter. When I connect the two, the monitor is recognized by the OS and recognizes the computer, displays the image for about two or three seconds, and then disappears. This same cycle repeats every fifteen seconds, or so, no matter how I attempt to introduce the monitor to the system, either before startup, or after, or with either mirroring or desktop extension on. The monitor does work with an older 1.83 GHz MacBook also running Snow Leopard, so I don't think it's either the monitor or Snow Leopard entirely in themselves. I searched these forums, Apple's documents and manuals, and the Internet in general, and can't seem to find out what's wrong here. Do I need to use the DVI adapter instead?
     
  2. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #2
    You are probably using the 9400M GPU, am I right?

    Do you still have warranty? Maybe a visit to the Genius Bar or an Apple Authorized Repair Shop might help.
     
  3. spellingace91 thread starter macrumors newbie

    Joined:
    May 11, 2010
    #3
    I am using the 9400M. I have the general repair warranty still, but no phone support, which would be extremely handy, as I live a fair distance from an Apple Store.
     
  4. DewGuy1999 macrumors 68040

    DewGuy1999

    Joined:
    Jan 25, 2009
    #4
    Which adapter are you using to connect the monitor to the MBP?
     
  5. spellingace91 thread starter macrumors newbie

    Joined:
    May 11, 2010
  6. spellingace91 thread starter macrumors newbie

    Joined:
    May 11, 2010
    #7
    The support page seemed to be describing the problem I'm having, but, upon downloading, installing, and running the update, a pop-up announced not being able to find an adapter to update, despite it being plugged in securely, and the monitor on the other end. The webpage does say the update is for 10.5.6, while I am running 10.6.3. That surely seemed to be the way to go, unfortunately.
     
  7. ARF900 macrumors 65816

    ARF900

    Joined:
    Oct 30, 2009
    #8
    Got an external mouse and keyboard? Try clamshell mode.
     

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