Macbook Pro Multiple Monitor Problem

Posted by thinksocrates on Super User See other posts from Super User or by thinksocrates
Published on 2010-03-05T13:09:11Z Indexed on 2012/03/30 11:33 UTC
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I have been using a Macbook pro (newest model) for about 4 weeks with dual monitors. It has been working great using the mac adaptor to dvi. Today however, my mac will not recognize it's built in monitor while the second monitor is plugged in.

  1. Plug in second monitor
  2. The screen on the laptop goes dark.
  3. The second monitor acts as the main screen.
  4. Click "Detect displays". Nothing happens
  5. Unplug the second monitor
  6. Screen on the laptop comes on.

Any thoughts?

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