Radeon 6950 dual monitor problem!

[Aleksander_4]

Hello,
I cannot get dual monitor setup going.
My graphics card (Radeon 6950 2GB) has 5 display connections (2x mini display port, 1x hdmi, 1x dual link dvi-i and 1x single link dvi-d).
The monitors I'm using are Benq xl2411z (has vga/hdmi and dvi) and LG Flatron E2240S (only has vga).
With the cables I have I tried this setup:
I have connected Benq with Dual link cable provided with monitor to DVI-I slot on the graphics card and it works just fine. I have tried connecting LG with vga cable through d-sub/dvi adapter to the single link dvi-d port but it's not being recognized by windows/ati catalyst.
Both monitors work just fine when I connect them individually, but only the one connected to dvi-i dual link port works with 2 of them on.
Is there a way to get this setup (monitors & graphics card) going? If so do I need different cables/adapters (benq needs to be connected through dvi dual link to work on 144hz which is what I would prefer). Any help would be greatly appreciated!

 

[RobCrezz]

You need to use the Dual link dvi port for the 144hz monitor, but if thats the DVI-I connection then thats the only one that can carry the vga signal also (DVI-D is digital only....

Are you sure the Dvi-D is only single link?

You could try using mini display port -> Dual link DVI for the benq, and the DVI-I -> VGA for the LG

 

[Aleksander_4]

http://www.manualslib.com/manual/542530/Amd-Radeon-Hd-6950.html?page=17#manual
according to manual it's sadly a single link dvi-d.

 

[RobCrezz]

bummer. Well only option I guess is to see if you can use a mini dp to dual link dvi for the benq, to free up the dvi-i for vga duty.

Otherwise you could grab a displaylink USB adaptor for the lg?

 

[Aleksander_4]

So will sth like this:

Benq: mini dp port on graphics card + mini dp to DVI adapter (is this correct? http://www.komputronik.eu/product/280726/Electronics/Accessories_Exploitation/LogiLink_DisplayPort.html) and dvi dual link cable to dvi port in monitor.
LG: DVI-I dual link port on graphics card + DVI to VGA adapter to VGA port in monitor.

Would I be able to still use 144hz in that connection setup?

 

[RobCrezz]

Not sure about that adapter, it needs to be "Active" and dual link
http://support.amd.com/en-us/recommended/eyefinity-adapters

Yeah pretty sure your displayport 1.2 supports 144hz.

 

[Aleksander_4]

Now that I think about it can I just use hdmi port and hdmi-vga adapter to connect my lg? (seems like a much cheaper option).

 

[RobCrezz]

I havent found hdmi to vga adapters to work correctly (because hdmi is digital and Vga is analogue), but you can try if you want to risk it.