2 Apple Cinema 30" Displays one won't recognize optimal resolution

[macrographics]

Running a ATI Radeon HD 5670 and my DVI connection detects the optimal resolution 2560 x 1600, but my second which with an DVI to HDMI adapter is plugged into the HDMI port as an extended display however will only detect as a generic monitor and thus capped at 1280 x 800.

Anyway to get my second monitor to use its optimal higher resolution?



Thank you in advance

 

[pbm86]

For 2560 x 1600 you need a dual-link DVI port and most video cards have only one dual-link DVI. You might want to get a second video card if your computer supports such a thing.

 

[Outlander_04]

I would try only using the DVI inputs into the monitors .

Presumably your card has displayport , HDMI and dvi out? If so then use a displayport to dvi adapter , and then a dvi cable

 

[macrographics]

@pbm86, thank you for the added direction. I have swapped out my single DVI-D & HDMI graphics card with an Nvidia GF 7900GS Dual DVI-I Dual graphics card however, I am experiencing the same problem. My first Cinema HD Display recognizes and produces the native resolution of 2560 x 1600. My second identical display now connected to the DVI-I port now is recognized as a cinema HD display (as if previously there wasn't a bi-directional communication), but it is till capped at the 1280 x 800 resolution.

Others have advised I remove old drivers and update. I am running the latest 64bit windows driver for this card, but can't figure out what is causing this resolution limitation.

Thank you in advance for any further ideas.

 

[KevinAr18]

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