Monitor setup

Madchaders

Madchaders

Madchaders

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Joined
24 Mar 2011
Posts
30
Hello

I decided i would try out this whole dual monitor setup with a spare one i have last night and seem to be having a few problems getting it to work correctly.

The problem i am having is that the second monitor that i want to add is staying in powersave/sleep mode when i boot the PC up, the monitor is also not detected in CCC/Device manager even when i click the "detect display" / Scan for new Hardware changes.

The second monitor i am trying to add works fine when i boot the PC up with that as the primary but then the same thing happens to the other one.

I have made sure that the power save options under windows is on "never" and i also read about changing the power management under BIOS to POS1 instead of 3 (i am at work atm i cant remember the tag for it might be wrong)

The main monitor i am using at the moment is 1080p however the second one does not go that high it goes to 1600x1200 if maybe that is the issue ? I have tried lowering the primary monitors resolution to see if it made any difference but it did to change things.

Both of the monitors are connected to my primary (top) graphics card, i have tried to run the second monitor on the second card but it still gives the same result, both monitors connect to the graphics card using a VGA cable which has an addapter on the end so it connects to the graphics card.

My hardware setup is as follows:

Intel I7 920
6GB Ram
2x 6950 in Crossfire
750W PSU

If it cant be made to work its no major biggy but i wouldnt mind trying it out if something can be done to get them to work.

Thanks
 
Think i found the issue.

Cant use 2 DVI-VGA adapters at the same time, to make it work you need to use the primary on a DVI-VGA CABLE and the second on the DVI-VGA ADAPTER, something about the primary monitor being on the dvi-vga adapter turning off the second adapter port on the card.

Will try when i get home bit of luck this works :D
 
Madchaders said:
Think i found the issue.

Cant use 2 DVI-VGA adapters at the same time, to make it work you need to use the primary on a DVI-VGA CABLE and the second on the DVI-VGA ADAPTER, something about the primary monitor being on the dvi-vga adapter turning off the second adapter port on the card.

Will try when i get home bit of luck this works :D
Click to expand...

It won't work and you can't use the connections from the second card in CrossFire.

On the HD 6950 only one of the DVI connectors is DVI-I and so provides an analogue signal.

The other is DVI-D so digital only.

You can't run a VGA monitor from a DVI-D connector using an adapter or a cable.

Are both the monitors VGA only?
 
Madchaders said:
DVI-I means i can use the setup i said right ? or wrong ?
Click to expand...

Wrong.

You can't connect the 2 monitors using VGA.

You need to connect the old VGA monitor using a DVI/VGA adapter or cable connected to the DVI-I connector on the graphics card.

You need a DVI-D cable connected to the DVI-D connector on the graphics card for the new monitor. Like this:

OcUK Value 2m DVI Male - Male Monitor Cable

I assume your new monitor isn't 120Hz?
 
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The new monitor seems to have VGA and 2 x DVI-D.

The easiest way to connect them both is to buy a £5 DVI-D cable.

Old monitor - DVI to VGA adapter on the DVI-I connector of the graphics card and then a VGA cable to the monitor.

New monitor - A DVI-D cable from the DVI-D connector on the graphics card to the DVI-D connector on the monitor.
 
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