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Trouble with my dual display setup

#1MissHedgehogPosted 2/25/2014 8:56:22 AM
Hi! I recently purchased a new GPU (Club 3D Radeon 7870) and I want to use multiple monitors with it. I have an old Samsung monitor which only outputs VGA which I have connected to the GPU with a VGA to DVI converter. I tried connecting a second montior to the second DVI port on the GPU but the monitor would not detect in Catalyst. I tried connecting another monitor to the HDMI port on my GPU and it would detect but nothing shows up on the display. It says that my desktop has been extended but no picture appears and I am able to move my mouse offscreen. When I disconnect my VGA screen, the HDMI screen does not appear either, despite the fact that it works with my other computer on a GTX 760. Am I doing something completely wrong with my monitors or is there a problem with the GPU/drivers? Thanks for any help you can provide!
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3DS FC: 5043-2061-7637 / Marissa from Corellia
ACNL dream town 7200-2613-6622
#2MissHedgehog(Topic Creator)Posted 2/25/2014 4:02:52 PM
Any help? :)
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3DS FC: 5043-2061-7637 / Marissa from Corellia
ACNL dream town 7200-2613-6622
#3arleasPosted 2/25/2014 4:07:20 PM
Try switching the monitors up and see if the monitor does or does not display on the other port... also I don't know if there's something in the control panel for your GPU or not (I use nVidia) but I know nvidia has a setting for single vs dual monitor mode... so maybe that's something to look at....though if you can move the mouse off the side of the screen it would make sense that it's acting like there's a 2nd monitor.

It might just be a bum card...or it might just be some problem with the VGA->DVI thing not working right.
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#4Killah PriestPosted 2/25/2014 4:54:23 PM
(I use nVidia)

for reference AMD (at least under advanced mode control center)

open CCC -> Desktop Management -> Creating and Arranging Desktops.

also

CCC -> AMD Eyefinity Multidisplay

windows you can also winkey + P to bring up multi monitor settings.

might be a case of it loading the monitors but then disabling one of them, had that issue with nvidia, I don't remember exactly how I solved it I think it defaulted my primary as a secondary and I had to manually enable the secondary display then make it primary.
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#5WyzeGyePosted 2/25/2014 5:00:26 PM
What are the outputs on the card? 2xdvi 1xhdmi and 1xDP?

Do you have a tv to test on? try as many things as you can without using the vga-dvi adapter. But from what you're saying it's possible tthat the card is faulty. Do you have the 6 (8?) pin connector plugged in?
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#6MissHedgehog(Topic Creator)Posted 2/26/2014 12:38:48 AM
Thanks for your input! Unfortunately I have tried most of the above, updated drivers etc. I'll try opening it up and checking the 6-pin connector. Will let you know if that changed anything!
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3DS FC: 5043-2061-7637 / Marissa from Corellia
ACNL dream town 7200-2613-6622
#7MissHedgehog(Topic Creator)Posted 2/28/2014 12:58:30 PM
Well, I put in my old graphics card and was able to set up two monitors without any problems, so it is definitely a problem with my new card. I submitted a support ticket, hope I get to send it back/get a new one.
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3DS FC: 5043-2061-7637 / Marissa from Corellia
ACNL dream town 7200-2613-6622
#8DarkZV2BetaPosted 2/28/2014 1:04:39 PM
The Power of Radeom
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