Getting an odd tear on my centre monitor (eyefinity).

[TheMorningStar]

I'm not sure if this is down to the monitor, my gfx card or a software/driver issue, Anyone had anything like this?

My centre monitor is getting a tear through it, horizontal, most visible in 2D when I'm dragging windows around, but it's gaming also. Top half will lag behind as much as an inch, speed dependant, so it does catch up, it's like a lag issue, not a constant break. the fault line does move around somewhat randomly, I think it's changing after a reboot or a game load.

I'm just going to swap around the inputs to see if that's the issue, if it sounds familiar, please jump in.

Centre monitor is on DP, also using HDMI and DVI on the other two
Monitor is an Asus MG278 @1440p native
GFX is a 7950 @stock

 

[TheMorningStar]

Pretty sure this is something software, have it on two now. gonna try reinstalling the drivers.

 

[TheMorningStar]

It looks like it's Eyefinity not liking the 60hz @1440p on these monitors (HDMI1.4 and DVI). Seems to force unusual fixed screen tearing, should disappear when I upgrade the gfx card later in the year, just ignoring Eyefinity until then, screens are normal without it.

 

[enigma27]

Strangely i noticed this on my PC last night using chrome.. was getting tearing like with v-sync off in games.. turned hardware acceleration on in chrome and it went away.. never had it before..

wonder whether its something to do with a windows update that recently installed?? that's the only thing that changed on my pc in the last two days.

 

[TheMorningStar]

I've recently got new monitors so that was my main suspicion. They act normally outside of an Eyefinity profile. I think, however, rather than it just being Eyefinity, it's Eyefinity when using HDMI1.4 and DVI @1440p @60hz, could be a bandwidth issue. Display Port 1.2 doesn't have this issue but that can push 144hz @1440p. I assume when the card gets updated to a 3x DP/HDMI2.0 model it'll be fine.

It looked like the screens were randomly choosing a place on the screen to begin to refresh, this line matched perfectly on two monitors, it did look very like a vsync issue but pretty odd in 2D, mostly noticeable when moving a window but you could see it when playing a video also.