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09-13-2020

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Adaptive Brightness

2020-09-13, 16:40 PM

Hi all,

 

I recently purchased a T490, and am incredibly satisfied with the purchase. My only complaint is one that I have with nearly every device I've ever owned, however I have not been able to figure it out for this laptop: auto/adaptive brightness.

 

I've disabled auto-brightness on the laptop and the screen does not react to external light changes. However, the screen does change brightness based on what is on the screen. For example: if the screen is displaying a mostly dark image, the brightness will gradually lower. If the screen is displaying a mostly light image, the screen will gradually brighten. This is beyond annoying, particular in low light environments. I've done about as much troubleshooting as I know to do, and have found on the internet:

 

-Disabled auto-brightness in settings

-Disabled enhanced power savings in the Intel Graphics Command Center

-Attempted to disabled the brightness features in the registry

-Adaptive Brightness in power options:

    -This option is not available for me in Control Panel. There is no setting for adaptive brightness in power plan settings in Control Panel. 

 

I'm not sure what else I can check, and am open to suggestions. 

 

 

Some Computer Details:

-T490

-Windows 10 Pro, 1909

-Intel(R) 

    -UHD Graphics 620

    -Core i7-8565U

 

Please let me know if there is any more relevant information I can provide, and if anyone has any ideas. 

Thanks!

 

 

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3 Posts

09-13-2020

US

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  • Message 2 of 2

Re:Adaptive Brightness

2020-09-13, 22:27 PM

Sounds like you've tried quite a bit.

 

Found something with google foo.

 

Maybe worth a shot?

 

https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T470p-automatically-dimms-display-brightness-with-different/td-p/3924682

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