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Q: 3-mintor setting won't work

I use 2 Dell 27" monitors via Display Port and 1 LED TV via HDMI port on an late 2013 Mac Pro.  It was OK for 3 monitors working as a big long desktop before, but since don't-know-when the setting won't work.  I can now either have 2 Display Port monitors working or one of them plus LED TV working.  I don't know what's wrong with my setting.  I'm sure all monitors and TV are working.  please help.

OS X Mavericks (10.9.3)

Posted on Jun 8, 2015 12:13 PM

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Q: 3-mintor setting won't work

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