3 monitors with ATI HD5890

I have connected two monitors with HDMI and the third with Displayport adapter to HDMI. The problem is that I only can activate two monitors, and not the third. When trying to activate the third I get an error saying Can't save settings.

Any ideas?
JAndreassenAsked:
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jamietonerConnect With a Mentor Commented:
In order to get 3 monitors one of the monitors has to have NATIVE displayport support a displayport to HDMI adapter will not work. Here's a video with more info on setting up eyefinity.
http://www.youtube.com/watch?v=RZAkCoaq384
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Gary CaseRetiredCommented:
Although there are 3 connections, the card only supports two displays at a time.     You should be able to activate any two of them -- but not a 3rd.      If you want 3 displays, you'll have to either add another video card, or use one of Matrox's adapters to drive two monitors from a single output     [DualHead2Go: http://www.matrox.com/graphics/en/products/gxm/dh2go/    or TripleHead2Go:  http://www.matrox.com/graphics/en/products/gxm/th2go/ ]
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JAndreassenAuthor Commented:
For most cards this would be true, but my card is supposed to run 3 monitors.
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Gary CaseConnect With a Mentor RetiredCommented:
Agree -- I missed that this was an Eyefinity monitor.    But as jamietoner noted above, you have to have native displayport support.    The AMD/ATI web site states these requirements:   "... To enable more than two displays, additional panels with native DisplayPort™ connectors, and/or certified DisplayPort™ adapters to convert your monitor’s native input to your cards DisplayPort™ or Mini-DisplayPort™ connector(s), are required."
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JAndreassenAuthor Commented:
Thank you, and I see that a certified adapter is hard to come by for me living i Norway...I don't understand the thought behind DisplayPort, doesn't seem like alot of monitors have that either.

Maybe it is easier to rather go for the Matrox TripleHead2Go?
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Gary CaseRetiredCommented:
The TripleHead2Go attached to one of your two DVI ports would easily let you support 3 monitors -- one with the other DVI port and two with the TripleHead2Go [which supports higher resolutions if you only drive two monitors with it].

Note that the 5890 is not yet listed as a supported video card for the TripleHead2Go, but it supports all the other 58xx cards, so I suspect it simply hasn't yet been added to Matrox's list.     Nevertheless, I'd be sure it's returnable just in case.
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Gary CaseRetiredCommented:
... another solution -- IF your system has an additional PCIe x16 slot -- is to simply add another video card.
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jamietonerCommented:
Display port is new tech so it will be awhile before its standard. I personally would add an inexpensive video card if you have an available pci or pci-e slot and use it for a third monitor.
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JAndreassenAuthor Commented:
Ok, one last try, ordered an active adapter and hopefully this will work.
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QEMS2Commented:
The active adaptor will work for you, something like this
http://www.amazon.com/Accell-UltraAV-B087B-002B-DisplayPort-Dual-Link/dp/B002ISVI3U

should be fine
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Gary CaseRetiredCommented:
An active adapter will work fine -- they "look" exactly like a display-port display to the video card.
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JAndreassenAuthor Commented:
Woohoo. Plugged in my newly arrived active adapter, and it works fine! Thanks for your help!
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JAndreassenAuthor Commented:
Solved. Turnes out it wasn't too difficult finding an active adapter.
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