144hz is causing black flickering on my screen

[Civzx]

Hi. I bought a Benq XL2420g (144hz gsync) monitor a few days ago, but i've been experiencing black flickering and flashing at 144hz. The flickering usually happens when theres a quick change in picture or in some moving backgrounds when scrolling up and down. Its also showing in loading screens or when doing things like opening my youtube inbox. Its only flashing black in certain areas of the picture triggering it, never the whole screen.

The flickering and flashing is at its worst when i scroll up and down at benq's own website
http://www.benq.com/microsite/eye-care-monitors/ff.html

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All the flickering goes away when i lower the refresh rate to 60hz. Enabling/disabling gsync seems to have no effect, neighter do changing between the standard mode and gsync mode (DVI cable and Displayport).

I've also tried several different nvidia drivers, and reinstallation of java and flash to no help.

What could be the cause of this? Did i recieve a broken monitor?
It seems to work perfectly fine ingame.

 

[quandao93]

are you at 144hz ? monitor is plugged in with dvi D dual link cable?

 

[Civzx]

are you at 144hz ? monitor is plugged in with dvi D dual link cable?

Yes, the flickering only seems to happen when the refresh rate is set higher than 60hz. Both cables that came with the monitor are plugged in correctly.

 

[photonboy]

If the monitor works in-game it doesn't sound broken.

With G-SYNC disabled it will be updating the screen 144X per second with what's in its buffer. Any flickering should be due to the data provided to the buffer by the computer itself. If the monitor was the problem I think the flickering would happen everywhere.

I suggest contacting BenQ and/or going to their tech support area if it's useful to see if others have the same issue.

Things to try:
1) Different input (i.e. DP instead of DVI-I).

2) Different video card (such as connecting to the motherboard and use the CPU's iGPU if you have one)

3) Try 120Hz instead of 144Hz if possible. Not sure what settings you support. You said 60Hz worked so that may be a good compromise at least while trying to figure out the problem.

4) *change monitor settings like disable dynamic brightness etc:
Not sure why this would help, but I don't know everything.

 

[bignastyid]

Both cables? You only need 1. Try just using the displayport cable.

 

[photonboy]

Update:

You could also try burning an UBUNTU DVD and boot/run right from that disc. See if you get any issues in Youtube etc there.

 

[Civzx]

I just tried changing the inputs. I used each cable seperately and they both had the same flickering above 60hz.

My gpu is gtx 970 and i dont think its the cause of the problem as im having no issue ingame with 144hz. Unfortunately i dont have the tools to screw it out of my computer right now (i tried), but ill check that as soon as i get the chance.

Edit:
- Changing resolutions has no effect
- Installing Adobe reader and other products from the Benq CD has no effect
- Changing the picture modes / brightness / other settings has no effect

 

[Civzx]

I changed the colors from 32bit down to 16bit, and the flickering is gone.

60hz removes the flickering
16bit removes the flickering

Everything looks pink with 16bit so i refuse to stay on this setting.
The monitor should be capable of running 144hz 32bit perfectly fine. I do find it weird how im not having any issues with 32bit colors ingame, its only in the browser or loading screens.

 

[Civzx]

Here is a youtube video showing the flickering: https://www.youtube.com/watch?v=DNZ7McJHYC4&

Please excuse the bad quality. The flickering is more obvious in real life, and the phone cam is not picking up the flickering on the purple background.

I've tried different ram, but it didn't help.

 

[photonboy]

I changed the colors from 32bit down to 16bit, and the flickering is gone.

60hz removes the flickering
16bit removes the flickering

Everything looks pink with 16bit so i refuse to stay on this setting.
The monitor should be capable of running 144hz 32bit perfectly fine. I do find it weird how im not having any issues with 32bit colors ingame, its only in the browser or loading screens.

Contact Benq.
I'm really not sure what the deal is.

 

[cakez]

Is that problem solved? I'm stuck with the same problem.