AMD Radeon R9 295x2 - Quad monitor problems

[Syndicution]

I currently have a quad monitor setup, but my 4th monitor which is on top won't work unless I turn off one of the other monitors.
I get this message from AMD Catalyst CC: To extend the desktop, a desktop or display must be disabled.
I have all monitors connected to all Mini DP connectors on the card.
Monitors: Asus VN247h x 3 and BenQ GL2450HM (Which won't work)

 

[jcaulley_74]

Are all of your monitors configured to DP 1.2? DP 1.1 only has half the bandwidth of 1.1. Go into CCC, look at Information-Displayport Diagnostics. You will be able to see bandwidth consumption for you DP ports.

 

[Syndicution]

Are all of your monitors configured to DP 1.2? DP 1.1 only has half the bandwidth of 1.1. Go into CCC, look at Information-Displayport Diagnostics. You will be able to see bandwidth consumption for you DP ports.

I do not have that option in Amd CCC, maybe cause I use a HDMI to Mini DP adapter?

 

[jcaulley_74]

Yes, that is your problem. You can try connecting one of the monitors through the dvi port on the card. I think it has its own data bus. Otherwise you would need native display port monitors.

 

[Syndicution]

Yes, that is your problem. You can try connecting one of the monitors through the dvi port on the card. I think it has its own data bus. Otherwise you would need native display port monitors.

That was my original plan, but that didn't work so I bought another HDMI- Mini DP Cable.. But I can try again

 

[jcaulley_74]

Another option, if you are not using the 4th monitor for gaming and are just using it for Web sites, videos, is to attach it to the processor integrated video from the motherboard. You will need to make sure the integrated video is enabled in the uefi/bios and that the drivers are installed. Then attach the 4th monitor to the motherboard.

 

[Syndicution]

Another option, if you are not using the 4th monitor for gaming and are just using it for Web sites, videos, is to attach it to the processor integrated video from the motherboard. You will need to make sure the integrated video is enabled in the uefi/bios and that the drivers are installed. Then attach the 4th monitor to the motherboard.

I tried that too, didn't work