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I've just updated to OS X 10.8.2 (earlier 10.7.5) on my Mac Pro. And I have 3 monitors - DVI, DisplayPort (primary), DVI; attached to 6850. Everything works fine, but every time I start the computer, the primary monitor remains off.

This can be fixed manually re-connecting the DisplayPort cable.

I did not have such issue while being on 10.7.5.

How can I get rid of this behavior with software changes?

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Nobody knows now? :( –  inline-coder Jan 31 '13 at 14:36
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