Windows 10: Windows 11 automatically changes screen brightness HDR

Hello, I have a strange problem under Windows 11 with HDR and Auto-HDR switched on. The brightness of the screen or contrast is sometimes changed automatically during operation. It is also sometimes changed between boots. Is there a setting here that I have missed? I have not found the Adaptive Brightness setting. Thanks in advance.

:)

 

Windows 11 Changes Brightness automatically when i enable HDR !

Goodmorning everyone.

So i bought my new monitor few days ago (Alienware AW2723DF 1440p) for my PC ,which supports HDR 600.

When i enable HDR under Monitor's option menu Windows 11 will change the brightness automatically depending on

what i'm viewing !

I notice that mainly while browsing (It happens on desktop as well). When i'm viewing a dark / black page the brightness goes all the way down and

when i open another tab with white in it ,the brightness goes all the way up!

Sometimes the brightness will be higher on the text which is white and the rest of the page if its dark the brightness will be

very low!

I searched on in internet for solution but nothing seemed to work for me ! The brightness slider is completely gone (HDR OFF)

and when i enable HDR there is only an option under Windows 11 HDR Section !

Any tips?

Thanks!

 

Windows 11 is changing my screen brightness while I am actively using Apps

Could you confirm if HDR is enabled on your system? If not, To enable HDR and Auto HDR in Windows 11, please follow these steps:

1. Enable HDR in Windows 11:
   
   • Navigate to Settings > System > Display.
     
   • Toggle on "Use HDR" under the "HDR" section.
     
2. Enable Auto HDR:
   
   • Within the same Display settings, toggle on "Use Auto HDR".
     

Once HDR and Auto HDR are enabled, you'll notice the "SDR content brightness" slider under the HDR settings. Now, proceed to adjust the SDR content brightness slider:

1. Adjust the SDR Content Brightness Slider:
   
   • The SDR content brightness slider regulates the brightness of non-HDR content, such as the desktop and file explorer, when HDR is enabled. This adjustment may potentially resolve the issue you're facing.
     

If the issue persists after these adjustments, you may consider the following troubleshooting steps:

• Connect a different monitor to your PC to determine if the issue lies with your monitor or your PC.
  
• Alternatively, if you're experiencing significant difficulties, reverting to Windows 10 could be an option to explore.
  

Please let me know if you require any further assistance or clarification.

 

Screen brightness change automatically

Hi,

Thank you for writing to Microsoft Community Forums.

I understand that the screen brightness change automatically while watching videos.

• Are you aware of any changes made to the PC recently?
  
• What is the model number of Lenovo Yoga PC?
  

Windows 10 has the ability to automatically adjust the screen brightness depending on the ambient light levels. This feature can be more annoying than helpful, either leaving your screen too dark or frequently
adjusting the brightness levels.

If you are using Lenovo YOGA 3 Pro-1370, I suggest you
Disable auto brightness feature
and check if it helps.

Additional information:

How to disable automatic brightness adjustment on Windows 10

https://support.lenovo.com/in/en/solutions/ht503796

Let us know how it goes.

Regards,

Zaki