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No sound after upgrade to Mountain Lion

Pretty straightforward: 10.8 did not recognize the internal speakers in my MacBook Pro, model A1229, on the first boot after upgrade installation. Both mute and volume controls were grayed out. Rebooting fixed the problem.

MacBook Pro, OS X Mountain Lion, A1229

Posted on Aug 3, 2012 9:11 AM

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No sound after upgrade to Mountain Lion

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