Windows 10: Display dims on battery power

No matter how many settings I tweak, I cannot get the display on my laptop to remain bright if I unplug it. It dims to an unacceptable level Any suggestions on how to fix this would be welcomed. Thanks

:)

 

Laptop display dim, but only on battery

After upgrade to W10 from 8.1, Laptop display is dim, but only when I boot up on battery power. Samsung NP470R5E with Intel HD Graphics 4000

When plugged in, the display has normal brightness.

If I disconnect the power it stays bright.

If I shutdown and restart on battery, the display is dim and cannot be brightened with the function keys.

When I go into settings, all display indicators falsely report 100% brightness.

If I connect mains power after starting on battery, the display remains dim.

All display and monitor drivers have been reviewed and are up to date.

All monitor and display drivers have been uninstalled and reinstalled.

All battery power saving setting have been reviewed. Everything reset to maximum performance.

All display and monitor settings have been reviewed, including advanced settings, and set to maximum performance/100% brightness, etc.

Multiple other combinations of settings tested for battery and display.

sfc/scannow did not find any "integrity violations"

Display remained dim after restart on battery in all tested combinations of settings

 

Add or Remove "Dim display after" in Power Options using Command Prompt

How to Add or Remove "Dim display after" from Power Options in Windows


The Dim display after setting in Power Options allows users to specify how long in minutes your computer is inactive before the display dims. This setting applies only to portable computers (ex: laptop or tablet) that support Windows control of the brightness level of an integrated display device.

*note If you did not originally have the Dim display after setting available, then it means it is not supported on your computer. Instead, the display will automatically dim by the set Turn off display after time.

If Dim display after is set to 0 minutes, then the display will not dim.

This tutorial will show you how to add or remove the Dim display after setting under Display in Power Options for all users in Windows 7, Windows 8, and Windows 10.

*Warning You must be signed in as an administrator to be able to add or remove this setting in Power Options.


CONTENTS:

• Option One: Add or Remove "Dim display after" in Power Options using Command Prompt
• Option Two: Add or Remove "Dim display after" in Power Options using REG file

EXAMPLE: "Dim display after" in Power Options











OPTION ONE

Add or Remove "Dim display after" in Power Options using Command Prompt
1. Open an elevated command prompt.

2. Type the command below you want to use into the elevated command prompt, and press Enter.
(Add)
powercfg -attributes SUB_VIDEO 17aaa29b-8b43-4b94-aafe-35f64daaf1ee -ATTRIB_HIDE

OR

(Remove)
powercfg -attributes SUB_VIDEO 17aaa29b-8b43-4b94-aafe-35f64daaf1ee +ATTRIB_HIDE
3. You can now close the elevated command prompt if you like.







OPTION TWO

Add or Remove "Dim display after" in Power Options using REG file

*note The downloaded .reg files below will modify the DWORD value in the registry key below.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\7516b95f-f776-4464-8c53-06167f40cc99\17aaa29b-8b43-4b94-aafe-35f64daaf1ee

Attributes DWORD

1 = Remove
2 = Add


1. Do step 2 (add) or step 3 (remove) below for what you would like to do.


2. To Add "Dim display after" to Power Options
A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Add_Dim_display_after_to_Power_Options.reg





3. To Remove "Dim display after" from Power Options
A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Remove_Dim_display_after_from_Power_Options.reg




4. Save the .reg file to your desktop.

5. Double click/tap on the downloaded .reg file to merge it.

6. When prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.

7. You can now delete the downloaded .reg file if you like.

That's it,
Shawn


Related Tutorials

• How to Change Power Plan Settings in Windows 10
• How to Add or Remove 'Turn off Display after' from Power Options in Windows
• How to Add or Remove 'Console lock display off timeout' from Power Options in Windows 10
• How to Add or Remove 'Adaptive display' from Power Options in Windows
• How to Add or Remove 'Display brightness' from Power Options in Windows
• How to Add or Remove 'Dimmed display brightness' from Power Options in Windows
• Add or Remove 'Enable adaptive brightness' from Power Options in Windows

 

Add or Remove "Dimmed display brightness" in Power Options using Command Prompt

How to Add or Remove "Dimmed display brightness" from Power Options in Windows


The dim display after idle timeout has been reached. This setting applies only to portable computers (ex: laptop or tablet) that support Windows control of the brightness level of an integrated display device.

This tutorial will show you how to add or remove the Dimmed display brightness setting under Display in Power Options for all users in Windows 7, Windows 8, and Windows 10.

*Warning You must be signed in as an administrator to be able to add or remove this setting in Power Options.


CONTENTS:

• Option One: Add or Remove "Dimmed display brightness" in Power Options using Command Prompt
• Option Two: Add or Remove "Dimmed display brightness" in Power Options using REG file

EXAMPLE: "Dimmed display brightness" in Power Options











OPTION ONE

Add or Remove "Dimmed display brightness" in Power Options using Command Prompt
1. Open an elevated command prompt.

2. Type the command below you want to use into the elevated command prompt, and press Enter.
(Add)
powercfg -attributes SUB_VIDEO f1fbfde2-a960-4165-9f88-50667911ce96 -ATTRIB_HIDE

OR

(Remove - default)
powercfg -attributes SUB_VIDEO f1fbfde2-a960-4165-9f88-50667911ce96 +ATTRIB_HIDE
3. You can now close the elevated command prompt if you like.







OPTION TWO

Add or Remove "Dimmed display brightness" in Power Options using REG file

*note The downloaded .reg files below will modify the DWORD value in the registry key below.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\7516b95f-f776-4464-8c53-06167f40cc99\f1fbfde2-a960-4165-9f88-50667911ce96

Attributes DWORD

1 = Remove
2 = Add


1. Do step 2 (add) or step 3 (remove) below for what you would like to do.


2. To Add "Dimmed display brightness" to Power Options
A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Add_Dimmed_display_brightness_to_Power_Options.reg





3. To Remove "Dimmed display brightness" from Power Options
*note This is the default setting.
A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Remove_Dimmed_display_brightness_from_Power_Options.reg




4. Save the .reg file to your desktop.

5. Double click/tap on the downloaded .reg file to merge it.

6. When prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.

7. You can now delete the downloaded .reg file if you like.

That's it,
Shawn


Related Tutorials

• How to Change Power Plan Settings in Windows 10
• How to Add or Remove 'Dim display after' from Power Options in Windows
• How to Add or Remove 'Turn off Display after' from Power Options in Windows
• How to Add or Remove 'Console lock display off timeout' from Power Options in Windows 10
• How to Add or Remove 'Adaptive display' from Power Options in Windows
• How to Add or Remove 'Allow display required policy' from Power Options in Windows
• How to Add or Remove 'Display brightness' from Power Options in Windows
• How to Add or Remove 'Adaptive backlight' from Power Options in Windows 10
• Add or Remove 'Enable adaptive brightness' from Power Options in Windows