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Clamshell mode does not appear to work with Mountain Lion installed

1156 Views 4 Replies Latest reply: Nov 14, 2012 7:24 AM by John Galt RSS
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Jul 30, 2012 10:33 AM

Installed Mountain Lion on an 11" MacBook Air last Friday night.  Now the MBA does not work in clamshell mode at work with an external monitor.  It does not appear to wake or connect to the monitor.

MacBook Air (11-INCH, MID 2011), OS X Mountain Lion

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