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Prashant Hiraskar
using 3 screens on MAC Pro 12 Core with ATI Radeon HD 5870
on Aug 4, 2011 at 4:49:54 pm

Hi..
I have bought a new MAC Pro 12 core machine. I wanted to use 3 Displays for my video editing work. AS of now I have got
1. 1 Apple 27" Cinema Display which uses mini display port
2. 1 Dell Monitor 19" with DVI Port
3. 1 LG HD Screen for previewing videos.

Now on my graphics card it has 3 ports. 2 mini display ports and 1 Dvi port. I have got 1 mini display to HDMI convertor for me to connect on to my LG Screen.
So now when I connect all the 3 ports that is 1 mini display with Apple 27" & 1 DVI for Dell monitor & 1 mini display to dvi convertor for LG screen then all the 3 doesn't work.

Either of the 2 works... 1 minidisplay & minidisplay to hdmi works or 1 mini display & dvi works but all the 3 displays doesn't work at a time. Kindly guide me how to get all the 3 displays working for the editing work.
Thanks...


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Curtis Thompson
Re: using 3 screens on MAC Pro 12 Core with ATI Radeon HD 5870
on Aug 4, 2011 at 6:20:25 pm

hello...

have you read the apple support doc on the topic?

http://support.apple.com/kb/HT4279

sitruc


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Prashant Hiraskar
Re: using 3 screens on MAC Pro 12 Core with ATI Radeon HD 5870
on Aug 4, 2011 at 7:13:57 pm

Yes I have read that article but still want to know in my situation is there a way in which I can view 3 displays together.


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Everest Mokaeff
Re: using 3 screens on MAC Pro 12 Core with ATI Radeon HD 5870
on Aug 7, 2011 at 5:04:55 pm

You've been pointed in right direction. You can't use three displays w/ single video card. You can use either two mini ports simultaneously or alternatively mini port and dvi. To use third display you have to buy second video card.

Sony PMW-EX3, Canon Mark II 5D, FCS3 in Moscow
http://www.mokaeff.com


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Prashant Hiraskar
Re: using 3 screens on MAC Pro 12 Core with ATI Radeon HD 5870
on Aug 7, 2011 at 5:46:42 pm

Thanks but Apple says that you can use 3 screens together 2 mini displays and 1 dvi ports is used without any convertors attached to it. Which means if I use 2 Apple screens and 1 Television screen with a DVI Port it should work... Thats what they say... I haven't tried though but will try soon.


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Gabe Fox
Re: using 3 screens on MAC Pro 12 Core with ATI Radeon HD 5870
on Jan 17, 2012 at 8:54:24 pm

Curious if you ever figured things out? I am currently in a similar situation and cant get things working.

My setup-
Mac Pro
ATI Radeon HD 5870

Display 1 - DVI to DVI
Display 2 - Mini DisplayPort to Mini DisplayPort
Sony LCD TV - Mini DisplayPort to HDMI

Any ideas?

Thanks!


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