[Michael]

You are right.

Not the monitor, not the GPU dp port.

It’s some sort of electronic interference.

Last night I removed the GPU riser cable, and mounted it directly to motherboard, and restore the refresh rate to 120Hz.

Still no luck, black screen still happened on the middle screen.

However this time I was playing ETS2, and I noticed black screen happened the same time I accidentally crash the track into wall. It happended twice, but I couldn’t reproduce it when I crash the truck on purpose.

I have a feeling that everytime black screen happened, it’s always the time my wheelbase(I use simucube 2 pro) generate a sudden FFB(like a crash or a sharp turn).

However I don’t have this problem when I use only one monitor, there must be some changes trigger this after I setup triple monitor.

But I tend to believe electronic interference causes black screen. I am not sure where it come from and why only affect the middle monitor. My best guess is that it’s from my wheel base because it’s closest to the middle monitor.

One of my friend told me that Fiber-optic DisplayPort cable is anti-interference. I am gonna keep trying.

Thanks for pointing a direction to me!