Windows 10: HDR option in Display works, but after exactly 30 minutes to dims my screen?

I'm on a desktop PC. My screen dims after 30 mins only when I have HDR ticked. I have unticked everything relating to sleep, hibernate, power saving etc. Only with HDR it does it. How do I stop it?

submitted by /u/Vivadrat
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:)

 

Dim Desktop Monitor when no windows open

I followed the steps you suggested. The troubleshooter noted and made two changes. It changed the Power Plan from High Performance to Balanced and it reduced the screen turn off time from 30 minutes to 10 minutes. After rebooting, the same problem occurs.
No change to the screen dimming.

I did notice that, among the items that it checked but did not change was, "Time before display dims is too long" . However, I cannot find anywhere that I can set the time before the display dims. The only display options under PowerOptions>Edit Plan Settings>Advanced
Settings>+Display are to set the time before the display turns off and enabling adaptive brightness.

 

How to dim screen?

I tried googling Windows Ten, "how to dim screen," but the layout listed is not the layout I have. I just got Ten yesterday. How do you dim the screen?

I can't even find the options in the Display section.

 

Windows 10 HDR problems in full screen.

Hello moderator

1. Its all the games I own that don't support HDR10. Basically when I full screen on a non-HDR game, the screen goes black for a few seconds and HDR gets disabled and all the colors looked washed out (Like its in SDR)

I took 2 screenshots, One is in window mode, the other is in full screen

Windowed mode (HDR on) : imgur.com

Full screen mode (HDR off) : imgur.com

2. Yes SDR looks washed out. I want to play my games in full screen and in HDR. Playing in windowed mode is a nightmare

3. I know because the monitor goes black for a few seconds and all the colors look washed out (As shown in the screenshots)

Sadly the fixes did not work

I updated the GPU drivers via GeForce Experience app.

My Monitor does support 4k HDR10

I tried lower the resolution and the refresh rate but that did not work.

Here is a video of my problem

YouTube Link :

Time Stamps :

0:00 HDR mode is on everything looks fine (In the video, when it looks high contrast, that means HDR is on)

0:35 I full screen the game. If you notice the high contrast is no longer there, the colors are washed out

0:46 I disable full screen and HDR mode is back on

*HDR looks high contrast, Ignore that, that's just the video itself.

Im also using windows 10 64bit 1809