http://www.macupdate.com/download/49044/detectdisplays.app.zip
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Detect Displays conveniently adds back the missing "Detect Displays" button functionality removed as a default option in System Preferences > Displays. Especially good workflow is to have an alias on each of multiple monitors. That way, if you remove or turn off a monitor and OS X doesn't detect automatically, you have a one-icon solution to refresh display configuration (e.g., menubar, dock, spanning, mirroring, etc.)
What's New
Version 1.0:
- Added key down option to show button in OS X 10.8 Mountain Lion
Requirements
OS X 10.8 or later
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