Question Random screen dimming ?

[ChennyBoi]

Randomly, my screen will go dark(not black) for a fraction of a second or for about 5 seconds at most.

Things I've tried:

• clean reinstall of nvidia drivers,
• changed display port cable,
• stopped overclocks,
• disabled windows HDR,
• changed monitors (from 1080p 120hz to 1440p 144hz),
• changed the port for my DP that I'm using on my GPU,
• disabled freesync on the monitor.

It seems to be the most noticeable when I'm watching a video and everything around the video will go dark but the video will be normal. My second monitor (1080p 60hz) which is is unaffected is on HDMI, but it is a huge hassle to swap over and I don't see how that could be that problem, but I'll try HDMI when it's more convenient. I don't know what is actually the problem, but since I replaced my monitor and the cable, my only suspicion is the GPU. I also had some problems around windows HDR over exposing my screen when I tried to take screenshots which look like a similar problem, but I'm not sure.

Any help is appreciated.

 

[Jordyypittas]

I have that by one game (FH5) if my game loads in goes slightly black and blacker, and i have more problems like blackscreens, games crashing.

I have RTX 3070 and a good PSU and already changed my RAM and stuff..
Tried alot off stuff still not solved.

 

[InvalidError]

Since the screen dimming issue only affects one monitor, it is most likely a monitor thing, not a GPU/PC one.

 

[Jordyypittas]

I am now using a different display port no crash yet (3 hours of gaming)


Edit: Still crashes... :/

 

[InvalidError]

If your monitor has local dimming, disable that somewhere on the monitor's OSD and I bet it will make the "rest of desktop goes dark while watching videos" thing go away.

 

[ChennyBoi]

So it turns out that hardware acceleration in chrome was the culprit for me (or so it seems). I'm not sure why but I found this thread which suggested that turning that off helped them and it seems to have helped me too, after turning it off I haven't noticed any dimming or flickers. I'll update this post if I find out why this fixed it or how to turn that setting on without running into the problem.