Can't get third monitor to work on AMD Radeon HD6970 2GB (Sapphire)

Toggle sidebar Toggle sidebar
T

ThermalSloth

Distinguished
Feb 23, 2011
5
0
18,510
Hi, first off thanks for reading and I hope you can help.

I've been using 2 monitors for a while now, which worked flawlessly, and I decided to hook up my third monitor (which I've had standing in a box for a while due to lack of space) yesterday.
Now, first I read up on what adapter I should get, so I purchased the Sapphire Active Mini DisplayPort to Single-Link DVI Adapter.
(I tried to use a Club3D Mini DisplayPort to HDMI Adapter also, but that was a passive one.)

When I plug the third monitor in the Mini DisplayPort slot, nothing happens except when I go into the "Screen Resolution" window and hit "Detect".
When I hit detect, I get the third monitor, but not the way it's supposed to be. Here's a few images:
Image 1, Image 2, Image 3, Image 4.
Not much luck on CCC either.

This is currently my set-up:

  • ■ 2x Samsung SyncMaster S22B300H connected to DVI
    (using DVI->HDMI adapter as the monitor has no DVI port, but only VGA and HDMI.)
    ■ 1x iiyama ProLite E2473HDS connected to the Mini DisplayPort using the adapter.
This is all hooked up to a Sapphire AMD Radeon HD6970 2GB, I'm running Windows 7 Professional 64-bit, and I've updated all of my drivers to their latest versions.

If anyone could please help me out here, that would be amazing.
 
Solution
N
Do you get the same result for both display ports? The 6970 chip doesn't support all the ports a the same time, so some of them don't work in parallel. The manufacturers for some reason don't tell you which ones are internally connected. Try to use 2*DVI+HDMI instead.
Sort by date Sort by votes
N

noidea_77

Distinguished
Jul 28, 2012
6,527
0
19,960
Do you get the same result for both display ports? The 6970 chip doesn't support all the ports a the same time, so some of them don't work in parallel. The manufacturers for some reason don't tell you which ones are internally connected. Try to use 2*DVI+HDMI instead.
 
Upvote 0 Downvote
Solution
bjaminnyc

bjaminnyc

Distinguished
Jun 17, 2011
621
0
19,060
Was never a fan of the active adapter situation with AMD, seems to have caused more confusion than solutions. Nevertheless, it may not be the problem.

I'd try 1xDVI + displayport and see if it works with 2 monitors or possible just the displayport by its self. This will eliminate the possibility the adapter is dead. If either of my above scenarios allow you to see content on the Prolite then its a driver issue or unfortunately the card.

Hopefully its the adapter, which is an easy RMA.

In regards to the poster above suggestion. Unless you have a flex edition card 3+ monitors will not work unless you use a displayport output, sounds like you've already figured that out with the active DP adapter purchase.
 
Upvote 0 Downvote
T

ThermalSloth

Distinguished
Feb 23, 2011
5
0
18,510


Apparently the 2 DVI ports are interconnected..?
I hooked one of my monitors up to the HDMI port, one of them to the DVI port, and one of them to the Mini DisplayPort, and now it worked.
I have no idea why it decided to work now, I thought I tried that already..

Oh well, it works!
Thanks for the suggestion. :)
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom