Question What causes my monitor to flash black every few seconds?

[uwggbt]

I've run into a serious issue with my Odyssey G6 monitor and I could really use some help figuring out whether the problem lies with the monitor or my GPU.


I bought the Odyssey G6 around three months ago, and it worked perfectly until one day, my motherboard(Monitors motherboard) suddenly died. I sent it back to the shop for repairs. They fixed it and also updated the firmware. Ever since I got it back, I’ve been experiencing a strange issue:
https://drive.google.com/file/d/1HQ2sSYQV920fC5X2yIbRRJ0qIbK_FCcq/view?usp=sharing

For those who can’t or don’t want to open the video — the issue is that ever since the monitor was repaired and returned, I’m getting random black screen flashes when opening certain apps. It doesn’t always happen — it's inconsistent — but for example, if I have Wallpaper Engine and Chrome running at the same time, the screen constantly flashes black while Chrome is open.

Interestingly, I noticed that if I enable the "Adaptive Sync Compatible" setting in the AMD driver, the issue disappears completely. But previously, I never had this setting enabled, and the monitor worked flawlessly.
Could it be that the firmware update now requires this setting to be enabled? I’m using a 6900 XT GPU. I’ve tested with multiple cables, used DDU to clean and reinstall all drivers, but the issue persists.
Sure, I could just leave Adaptive Sync enabled and move on, but it really bothers me that I now have to use a setting that I didn’t need before — and I’d like to understand why.


Any tips or help would be greatly appreciated. Thanks in advance!

 

[helpstar]

Do you mean the motherboard of the monitor or the PC´s motherboard?

could still be defective monitor. Maybe connection issue with the video cable or ribbon cables inside the monitor

 

[uwggbt]

Do you mean the motherboard of the monitor or the PC´s motherboard?

could still be defective monitor. Maybe connection issue with the video cable or ribbon cables inside the monitor

Sorry if i wasnt clear. My monitors motherboard died. Or atleast thats what the store said to me. They replaced it and updated the Monitors software.

 

[helpstar]

try the monitor on a different system
return it to the shop

 

[Misgar]

When I upgraded a video card in an old PC, the monitor flashed "black" every few seconds. I switched from HDMI to Display Port and the problem went away. The monitor was a circa 2012 16:10 aspect ratio 30" Lenovo. The GPU was an RTX 3060.

I assumed the old monitor was running HDMI 1.2 and the GPU was outputting 1.4 or perhaps 2.0. It might have been the cable, but I never did track down the reason.