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iMac external display, can't find way to change preference

Asked by ddawsonw in Apple Display Monitors

I hooked up an external projector display to an iMac.  Then I made a setting change that made the screen black.  How do I get rid of the setting?  Safe mode allows me to use the external display properly, but when I go back in as a user it goes back to the black screen.  Is there a file I can toss?  Also, I created a new user account and it goes black on that account as well so this is a system setting issue and not user specific.
[+][-]07/15/09 03:12 PM, ID: 24864721Expert Comment

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[+][-]08/03/09 06:25 AM, ID: 25004062Author Comment

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[+][-]08/30/09 11:10 PM, ID: 25220751Expert Comment

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