AMD Radeon HD 7770 1GB - 3 monitor display problems.

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Gleeson15

Gleeson15

Honorable
Aug 7, 2013
3
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10,510
Hello,

I currently have two monitors plugged into my Graphics Card. One is connected via DVI-I and the other via DVI-D. This setup left me with two spare ports in the back of the GPU. The HDMI port and the DisplayPort. I recently bought a HDMI cable so that I can have 3 monitors. This will go into the HDMI port in the GPU then into a 32 inch LED TV.

My problem is, that I can't seem to extend all three displays. If I disable one, then I can have the other two, but never seem to have all three at the same time.

I have done a little research into this and have had mixed conclusions about what to do next.
One site said that the HDMI connection on the GPU shares the same connector as the DVI-D. Therefore could I remove my HDMI cable, buy a DisplayPort adapter, plug the DisplayPort adapter into the GPU, then plug the HDMI cable into that?

Another site said that it may be because of me using the DVI-I port connection to VGA. So must all the connections used be digital?

Take a look at my GPU here.
Would this DisplayPort adapter do the trick?

Thanks,
Aaron
 
Solution
getochkn
A active displayport adapter should fix you up, then do displayport for your main display, DVI and HDMI. You are correct, the DVI-D and HDMI share the same connection, so their can be only 1 of them on at a time.
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Gleeson15

Gleeson15

Honorable
Aug 7, 2013
3
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10,510


Okay thanks, so my initial idea of:

DVI-I to VGA
DVI-D to HDMI
DisplayPort to HDMI

Will not work?

 
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getochkn

getochkn

Polypheme
Jul 2, 2006
12,407
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65,040
Why not do

DVI-i->VGA
HDMI->HDMI
DisplayPort->Active DisplayPort Adapter->HDMI


The key is getting the correct Active Adapter, look on Amazon or Newegg, and read the reviews for ones that people say work well for AMD 3 monitor systems. Some adapters are cheap and don't work well.
 
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Gleeson15

Gleeson15

Honorable
Aug 7, 2013
3
0
10,510


Okay great. Thanks for all the help.
Just to clarify, does this one seem good for the Active Display Port? http://www.amazon.co.uk/StarTech-1920x1200-Display-Adapter-Converter/dp/B009YC3W1Y/ref=sr_1_2?s=computers&ie=UTF8&qid=1375892507&sr=1-2&keywords=active+displayport+adapter+to+hdmi
 
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Z

ZetaJ65

Honorable
Aug 30, 2013
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10,510
Hi, I got exactly the same adapter for exactly the same reason, but it doesn't work.....
Connecting it on my HD5770 DP, the PC starts sound like trying to install and disinstall continuously the new adapter, and the mouse starts moving at steps.
All of this is happening without connecting any monitor to the adapter.
Startech (I wrote them), says it could be a defectiv item, but I found other people with the same problem looking on Amazon reviews http://www.amazon.com/StarTech-com-DP2HDS-DisplayPort-Converter-1920x1200/dp/B009YC3W1Y/ref=sr_1_5?ie=UTF8&qid=1377876080&sr=8-5&keywords=startech+displayport+to+hdmi
For someone is working good, but I preferred to have a refund and I'm looking for a Sapphire Flex Edition, it doesn't need any adapter.

Greetings.

Mauro



 
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