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Helpful answers
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Oct 20, 2014 4:15 PM in response to Gene Popeby Gene Pope,PS: These are all apple displays, apple active adapters and apple Mac Pro trash can. Everything worked fine right before I upgraded to yosemite.
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Oct 23, 2014 6:55 AM in response to Gene Popeby mlsphoto,Hello Gene,
Michael Schoenfeld here,
I had the same experience - bought my Mac Pro with 10.9.3 and had to find out the hard way about the "3 monitor bug" - 10.9.4 fixed things, 10.10 brought he problem back. I used my 10.9.4 Superduper clone to get back to work, so I would have to concur, that this is a REAL problem.
It's the bleeding edge of tech - you get cut - shouldn't happen, but it does sometimes. Get this - my 6 year old Mac pro, booting from a PCIe SSD from OWC with two old graphics cards and 2 old monitors FLAWLESSLY took to 10.10
It'll get sorted out I'm sure.
Michael
Map Pro 6,1
2 D700 Stock cards
64 gigs ram
1 TB SSD
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Apr 25, 2015 8:11 PM in response to mlsphotoby SUNNY0523,I just purchased a new mac pro 2015 last week with everything fully loaded.
I have a new Eizo monitor plus an older Apple Cinema monitor and an older Epson projector. If I unplug the projector in and restart the Eizo and Apple monitor display correctly but if I plug in the external projector I get oversized desktops with Mirroring turned on.
I contacted Apple and they said this is a flaw in the system software and I will have to get used to it.
Any advice or direction would be greatly appreciated.
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Apr 25, 2015 9:09 PM in response to SUNNY0523by Grant Bennet-Alder,I contacted Apple and they said this is a flaw in the system software and I will have to get used to it.
That person needs to be sent back for Mac Pro re-training.
System preferences > Displays ...
allows you to specify what displays are mirrored with what others:
Uncheck Mirror displays, and drag the Icons for the displays that are overlapped apart from each other and every display is part of an extended desktop, and its relative position can be set.
