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Windows 7: 6870 dual monitor fail

18 Jul 2011   #1
Jericho

Windows 7 Ultimate
 
 
6870 dual monitor fail

I've got a Sapphire Radeon 6870 that seems to have only one working DVI port, of the two on it. Both sets of cables work, one is brand new. Both monitors work. I can't use the HDMI out as I don't have an extension cable. I've tried using just the one that apparently doesn't work after a restart, nothing. I have no clue what's going on. I have the sapphire TRIXX utility to control fan profile, and AMD overdrive to control clock speeds, as well as the basic drivers for the card.


My System SpecsSystem Spec
18 Jul 2011   #2
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

Your problem is that you have one monitor that can use DVI (206BW) and one that is VGA only (920Nx), and a video card that only supports VGA/analogue on one of its two DVI ports. You need to figure out which of the two is the one that supports VGA when using the DVI-VGA adapter, and connect the older VGA only monitor to it.
My System SpecsSystem Spec
18 Jul 2011   #3
Jericho

Windows 7 Ultimate
 
 

Ah... ha. So I need to go get a DVI cable, rather than using two VGA cables and adapters. *head desk* Well that's a little more understandable.
My System SpecsSystem Spec
18 Jul 2011   #4
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

That would fix it definitely.
My System SpecsSystem Spec
18 Jul 2011   #5
Solarstarshines

Windows 7 Home Premium 64bit sp1
 
 

If you have the option to go HDMI that would eliminate one and the other could be dvi or vga what ever you prefer

I myself have one hooked up through hdmi and vga and work flawlessly
My System SpecsSystem Spec
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 6870 dual monitor fail




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