Fix Windows 10 Adaptive Brightness not working or turning off

Many systems have a facility called Adaptive Brightness which detects the light conditions in the proximity of the system and adjusts the screen brightness accordingly. Eg. when you are working in dark, the screen would dim automatically to night mode to compensate for the same.

However, at times the Adaptive Brightness of the system either stops working or doesn’t detect the right light mode. Eg. It would brighten the screen even when it is in a dark environment.

Causes

The causes could be a bad Windows Update, registry files getting corrupt, issues with the Graphics driver, incorrect power plan settings, etc.

Preliminary steps

1] Update Windows: If this is a known and reported issue, Microsoft would push a fix in form of a Windows Update. Here’s the procedure to update Windows 10.

Check For Updates

 

2] Run the Power troubleshooter: Go to Settings >> Updates and Security >> Troubleshoot and select the Power troubleshooter.

Power Troubleshooter

 

Thereafter, proceed with the following solutions:

Solution 1] Disable Display Power Saving Technology in Intel’s Graphics panel and Vari-Bright if you are using AMD

The procedure to disable Display Power Saving Technology in Intel’s Graphics panel is as follows:

1] Right-click anywhere on the Desktop screen and select Graphics Properties.

Right Click On Desktop And Select Graphic Properties

 

2] Select the Power option amongst the given choices.

Select Power Option In Graphic Control Panel

 

3] In the On Battery tab, click on Disable for the Display Power Saving Technology.

Disable Display Power Saving Technology

 

4] Restart your system and check if it helps.

The procedure to disable Vari-Bright from AMD’s settings is as follows:

1] Open the AMD Radeon settings panel.

2] Go to the Power tab and select the PowerPlay option.

3] Uncheck the checkbox corresponding to the Enable Vari-Bright option. It would Disable the option.

Disable Vari

 

Solution 2] Reset the power plans to default

1] Search for Command prompt in the Windows search bar and right-click on the option. Select Run as administrator.

2] Type the following command in the elevated Command Prompt window and press Enter to execute it:

powercfg -restoredefaultschemes

Powercfg

3] Restart the system.

 

Solution 3] Update the Graphics driver

1] Press Win + R to open the Run window and type the command devmgmt.msc. Press Enter to open the Device Manager.

Type Devmgmt

 

 

2] Expand the list of Display Adapters.

Update Graphic Card Drivers

 

3] Right-click and select Update driver for each one of them.

4] Restart the system and check if it helps.

Solution 4] Disable Adaptive Brightness in Registry (if the function is causing problems)

Quite some users have reported that Adaptive Brightness causes problems such that it detects the wrong light mode and either dims or brightens the screen at the wrong time. This could be annoying. Thus, we could disable the Adaptive Brightness from the Registry. Here’s the procedure for the same:

1] Press Win + R to open the Run window and type the command regedit. Press Enter to open the Registry Editor.

Regedit Run

 

2] Navigate to the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Intel\Display\igfxcui\profiles\Media\Brighten Movie

3] On the right-pane, right-click on the Entry ProcAmpBrightness. Select Modify.

Regsitry Level Fix

 

4] Change the Value of Value Data to 0. This disables the Bright Mode for Adaptive Brightness.

Change Value Data To 0

 

5] Thereafter, navigate to the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Intel\Display\igfxcui\profiles\Media\Darken Movie

6] On the right-pane, find ProcAmpBrightness once again and right-click on it. Select Modify.

Darken Movie

 

7] Change the Value of Value Data to 0. This disables the Dark Mode for Adaptive Brightness.

Change Value Data To 0

8] Restart the system.

Hope it helps!


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