Graphic Cards :: Triple Monitor Setup (Display Port)

Jul 25, 2014

So I'm running 2xR9 290X (crossfire) with 3xQnix Qx2710 monitors. One of the qnix monitors was purchased with HDMI/DisplayPort connectors along with the usual DVI connector (normally these monitors only come with the D-DVI input)

I had a 2 monitor (with just the two DVI-only monitors) setup for a while that was working fine.

Since installing the third monitor I'm experiencing several weird things:

- On boot, until the Windows login screen comes up (Windows 8.1), there is nothing on the non-primary DVI monitor (so my setup is my primary monitor is one of the two DVI monitors, and then the left and right monitors is another DVI-only and the DP monitor).

- If the monitors go to sleep, or I put the computer to sleep and wake it up, any windows that were on the non-primary DVI monitor are moved over to the primary DVI monitor. Windows on the DP monitor do not move in this configuration.

- Within CCC, after sleep / monitors off, I have to restart CCC's control of the color settings for the non-primary DVI monitor. (I'm forgetting what the actual button says, but it's the button under the Display color controls settings where you can manipulate the R/G/B channels - I have to use the GPU for color matching since the monitors don't have any inherent ways to change R/G/B levels

If I only connect the two DVI monitors this is not an issue.

If I connect one DVI and the DP monitor, after sleep/wake any windows that were on the DP monitor are moved over to the primary monitor (again, note that this didn't happen when all 3 monitors were connected).

I have tried the newest version of CCC, as well as the current beta version - same behavior in both.

I have tried using HDMI instead of DP - same behavior

Aspects of this sound similar to the issues discussed in this post : [URL] ......

What I don't understand is why the second DVI monitor is acting so oddly when all 3 monitors are connected. Why would there be no picture when the computer boots?

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