Widescreen Gaming Forum

so i got a xfx 7970 2 days ago but im trying to get eyefinity to work so i need a lil help with the cables what to go buy i have
3xUE32D4003 LED-TV 32" right now and they only have 2x hdmi outputs a scart output and thats it when i use 1 hdmi cable directly from the gfx to the tv that one works i can see my windows then i add a mini display port to hdmi to my gfx card now i have 2 working screens but when i connect a second mini display port to hdmi it doesnt work altough my ccc says he detected 3 screens and when im trying to enable the 3th screen it automaticly disables 1 of my other screens so what am i doing wrong any help is welcome thx sorry for the bad english im from belgium and sorry if my topic is bad first timer here

thx for reading GRTZ Souli7

I do not think that is a supported configuration, you can't convert two DP to HDMI. I think you may need to use a DVI to HDMI.

If you use a DP and convert it to a HDMI or DVI it requires TMDS clock timing, which DP does not use(DP is a data packet technology), and it must pull a TMDS from one of the other timing based connections. Usually the HDMI is tied to the second DVI port, as are the DP. The DVI is port is a Dual-link TDMS, meaning is can shed one to the other ports.

I think you need to use a DVI to HDMI, and DP to HDMI and the native HDMI. But I am not 100% sure as that is not a normal config I am aware of. But asuming the HDMI has its own timign clock, and the lone DVI has dual-linked TMDS and can shed one to the DP, then this config should work.

But I have not tried it, and never really considered it, until now. possibly some one else here can be of more help with direct experience trying to connect 3xHDMI in eyefinity.

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Exmortis Darkenblade aka "Scott"

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And the voice replied "Legion for we are many."

Nicely explained Exmortis! If that doesn't work, there's something else wrong.

Offtopic: Souli7, no matter how bad your English is; please, add some punctuation! That will make it so much more readable. A tip from a Dutchman ;)

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Ok thx :) but il post some pictures later . Because i really dont know what cables i need . I will put some pictures up from the things i have :) and maybe you can tell me what else i need because ive always been a geforce man

Picture link here.

Hope this helps!

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Music is my life. You are my music.

OMG is it that simple but they told me that i cant use the big dvi output from the gfx. Because otherwise eyefinity would not work . Or did they lie about it or where they really that stupid ?

Source please, I'd like to know what arguments they gave.

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Music is my life. You are my music.

ok i will explain with picture"s

1.so this is the back of my tv


2.the cables


3.VGA without cables plugged in


4.VGA with cables plugged in (note they told me not to use the the big slot the dvi<--->hdmi one) and only the other 3


5.my screen that it is telling me it found a connection to all 3 tv's


6.again a picture of ccc telling me 3 tv's are connected but the 1th one on the left is dissabled thats what it says


7.so here you see that 2 tv's are working


8.this is the back of the tv where i plugged in the hdmi cable all in the same hdmi slot 1/dvi


So now im wondering what i am doing wrong or forgetting or if i need anything else


PS : Moose the shops i went to where alternate, selextion and tones.be and they all said the same thing that i cant use the big dvi slot otherwise eyefinity would not work. I told them like you see in picture 6 where it says that the screen is dissabled if i try duplicating to that screen it says one of the other ones will be dissabled so they asked me did you update to the latest drivers of ccc i said yes and all screens work.

But whenever i connect a 3th monitor that that one does not work either how i plug the cables in the last one i connect doesnt give a picture and when i try to duplicate it it tells me the otherscreen will close then they asked me have you tried in eyefinity.
I told them yes but i cant go to my third screens its the same thing when i try going to the 3th screen it just closes an other one

Well, you just have to ignore that device then. Connect one TV to the DVI port, one TV to the HDMI port and one TV to the mini-Displayport. There is no reason the DVI port shouldn't be used. Never ever heard that before, the other insiders neither.

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Music is my life. You are my music.

By the looks it could be that the DP>HDMI cable you are using is not eyefinity compatible.
It looks like a passive direct through cable, and not an active adaptor type of cable.

If you removed the dvi or hdmi conneciton form the back of the pc, i suspect the DP>HDMI cable would work.

This falls back to what was said earlier by Exmortis about the TMDS clocks.

VGA, DVI and HDMI all require a clock to generate a sync/timing signal.
A single TMDS chip will provide 2 clocks, these 2 clocks are shared accross the many outputs on the GPU.

Although the DP signal does not require a clock sync/timing signal, it is possible for the DP ports to be used in passive mode which delivers a vga/dvi/hdmi signal but steals a sync/timing signal from another unused output, ie one of the dvi/hdmi ports.

As both the HDMI and DVI ports are already in use, unsing up the 2 avaiable sync/timing signals the 3rd output must be in native DP signal.. OR use an active adaptor (DP > HDMI) to create a 3rd clock sync/timing signal for the 3rd display to work.

The cable shown in your images looks like a passive cable, you would need to swap this out for an active one.

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