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Windows 7: Two Radeon HD 6350 (HDMI) not supporting three monitors

14 Feb 2012   #1
Skibbles

Windows 7 Pro x64
 
 
Two Radeon HD 6350 (HDMI) not supporting three monitors

I just got a new work computer here (Dell Optiplex 790) and this issue is driving me nuts because my productivity is way down without three monitors, and even further because I'm spending all my time trying to get three monitors to work =D

I have two ATI Radeon HD 6350 video cards with HDMI ports. I'm using two splitters. One splitter for the main card has two Acer monitors hooked up (these work), and the other splitter has a single Acer monitor hooked up and does not work.

I know it works, because I can alternate between monitors but only two at a time.

Now - I've been doing research for about six hours and I just can't figure it out. I've been reading a lot about something called a "display port" but I can confirm that there are no display ports on either video card.

I've included a pic just for fun I guess:




My System SpecsSystem Spec
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14 Feb 2012   #2
stormy13
Microsoft MVP

Win 7 Ultimate x64
 
 

Skibbles, welcome to the Seven Forums.

Is it two cards, or is it a single card with a low profile bracket like the one shown here?

Two Radeon HD 6350 (HDMI) not supporting three monitors-lowpro.jpg

If it is a single card, then you can only run two monitors off of it unless you use a splitter. A splitter also defeats the purpose of multi monitor unless you are looking to run the same thing on both (clone).


My System SpecsSystem Spec
14 Feb 2012   #3
Skibbles

Windows 7 Pro x64
 
 

I cracked open the case earlier to double check and it's certainly two separate cards. Device manager also has two cards listed.

I'm not trying to achieve eyefinity or anything, just three separate displays. My old station used to handle three monitors with a splitter and a single so I don't see how this can't work!
My System SpecsSystem Spec
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14 Feb 2012   #4
bassfisher6522

Windows 7 Ultimate 64 bit
 
 

Yes...with AMD GPU's you need a display port for all three monitors to work. The AMD technology is called eyefinity. Have a look at this.


Experience Eyefinity
My System SpecsSystem Spec
14 Feb 2012   #5
Skibbles

Windows 7 Pro x64
 
 

Thanks for the quick replies!

So I can have all the video cards I want but if they don't have display ports I'm SOL?

Eyefinity is exactly what I don't want though. I just want three seperate displays. Does this make a difference?

I just want to make sure it's clear I can't do anything so I can tell the boss the new PC won't work =)
My System SpecsSystem Spec
14 Feb 2012   #6
Solarstarshines

Windows 10 Home Premium 64bit sp1
 
 

you can do a vga to a Hdmi that is how i have two monitors set up the one with the HDMI has to be picked up first where the VGA is secondary that is probally why

Hdmi has to be enabled at start up you will see it when booting but when it comes to the vga it won't show till you have confirmed or customized the other monitor

If you understand what i am getting at establish the HDMI first then go on with the VGA
My System SpecsSystem Spec
14 Feb 2012   #7
Skibbles

Windows 7 Pro x64
 
 

I'm having trouble understanding what you're saying... =(

To be detailed however: the three monitors are all VGA connected to DVI adapters, connected to an HDMI splitter with DVI females.

VGA->DVI->HDMI Splitter (and thus, an adapter as well)
My System SpecsSystem Spec
14 Feb 2012   #8
Solarstarshines

Windows 10 Home Premium 64bit sp1
 
 

like i said start with HDMI first if you have a port use it seperate

second make sure you are actually using a dvi vs vga they look the same it might be confusing you

use one vga slot 1 dvi then 1 hdmi all seperate connection styles if you have a dvi spliter for HDMI fine but use the other as regular vga

Hope this is easier to understand
My System SpecsSystem Spec
14 Feb 2012   #9
Skibbles

Windows 7 Pro x64
 
 

I tip my hat to you sir. It worked!!!!

This is what I did for those who may have the same issues:

1) Both HDMI ports have DVI splitters plugged in.
2) One monitor has DVI straight from the monitor to a HDMI splitter on the "main" gfx card (slot 1)
3) The other two monitors are VGA, adapted to DVI, and both plugged into the "second" gfx card (slot 2)

I don't know how this worked or if I got lucky, but it's worth a try for anyone having problems.
My System SpecsSystem Spec
15 Feb 2012   #10
Solarstarshines

Windows 10 Home Premium 64bit sp1
 
 

Glad you got it going always helps to understand how the cards work with Hdmi

also welcome to 7 forums SKIBBLES
My System SpecsSystem Spec
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