Windows brightness on battery less than while in charge

inna

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Hello,

I know it may have been asked before, but unfortunately I have not found the answer.

The issue is while the brightness level is high, but when I plug the laptop in, it makes a little brighter and when I unplug it, brightness decreases.

I have searched the new results of google and none of them worked for me:

I do not have two brightness level for on battery and plugged in, I just have one.
Battery saver turned off and is set to never.
I did check my Intel Graphics settings and that was as the above link says.

I would be grateful if you could have helped me solve this issue.
Thanks in advance
 
Windows Version
Windows 10, Version 2004, OS Build 19041.804

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Mooly

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Have you looked in the 'Settings' options. Type Battery into the search box and click on 'Battery Saver Settings'. Untick the box shown.

Screenshot 2021-04-05 103651.jpg
 

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inna

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Have you looked in the 'Settings' options. Type Battery into the search box and click on 'Battery Saver Settings'. Untick the box shown.

View attachment 4192
Yes, that option is disabled and its above option "Turn battery saver on automatically at" is set to "Never".
 

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Mooly

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OK, there used to be another option for this in the power plans but that seems to have been removed.

Try this. At the bottom right click on 'Action Centre' (the square at the lower right). Use the slider for brightness to set the level you want on battery while running on battery. Now connect power and set it again to the level you want for plugged in. Windows should remember what you set for each.

Try that.

Screenshot 2021-04-05 105116.jpg
 

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inna

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OK, there used to be another option for this in the power plans but that seems to have been removed.

Try this. At the bottom right click on 'Action Centre' (the square at the lower right). Use the slider for brightness to set the level you want on battery while running on battery. Now connect power and set it again to the level you want for plugged in. Windows should remember what you set for each.

Try that.

View attachment 4193
I'm not sure why, but at the very moment I'm talking I see no difference and both plugged in and on battery, the brightness levels are the same.
I think it usually happens at night (I did not check the time exactly when happens).

I've checked this option and on both, the levels are the same at 100.

I'll check it later again and see if it happens again.
 

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    16GB DDR4
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Mooly

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If it seems to happen only at night then make sure you haven't got 'Night Light' turned on (although it is actually pretty good). Nightlight doesn't actually reduce brightness but it can give that impression when it kicks in.

NIGHT LIGHT

If/when it happens again then do some tests. If you want 100% then make sure the slider is still showing 100% when you feel the problem occurs.

Screenshot 2021-04-05 112625.jpg
 

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inna

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That's 100%.
 

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Mooly

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The 100% Night Light setting doesn't alter brightness, it alters the colour temperature of the display but its effect can look a a little like brightness altering.

I think you will just have to try it and see. Set your brightness levels on batt and mains independently, maybe turn the Night Light OFF as a test and see how it behaves.
 

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johngalt

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Other things that you can also check would be the advanced settings in the power profile that your laptop is using - especially if it is using one that was installed by the OEM, or even a hardware vendor (like AMD does for machines using their processor).

Be sure to check all of the different applications that come preinstalled by the OEM on your machine as well - sometimes these things can be buried pretty deeply, and in unlikely places, like, say, an AIO type management pp, or even in a simple update checker....

But if it happens only during certain times of the day, Night Light and all of its settings should definitely be explored first.
 

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