How do I turn off "adaptive brightness?"

I disabled Adaptive Brightness from services.msc ... and it STILL was auto-adjusting the screen brightness on me. Eventually I figured out the culprit, and I'm sharing it here in case anyone else keeps running into the same issue.

I'm on a Sony VAIO laptop. If you open up the VIAO Control Center, under Display there's an "Automatic Brightness Settings" option. Uncheck that.

Going through Windows' Power Options > Change plan settings > Change advanced power settings > Display didn't work for me, because "Enable adaptive brightness" wasn't listed there as an option to switch on or off, for some reason. Most Google search results will tell you just to turn that off. But without that option, I was at a frustrating dead end. Then I found this forum, which mentioned disabling it from services.msc. But that still didn't work for me. Finally I discovered the "VAIO Control Center" (not the Windows control panel) settings were behind it.

Hopefully ONE of those methods will work for anyone reading this. :)

Stephanie,

It is possible to disable the service if you are still interested in this. Additionally, you can also change a few settings in the power management to make it stop dimming. For the first, typeservices.msc into the search box then hit enter (or hit Windowskey + r and typeservices.msc if the first way doesn't work). Then, you should see as one of the first options in the list that pops up the Adaptive Brightness service. Clicking on it gives you the option to start and stop it. Right clicking, then clicking properties will show you a "startup type" option where you can disable it from the dropdown list.

Alternatively, you can click the battery meter, choose "more power options" and find the plan you wish to use (If I understand you correctly, you are using the high performance mode). Click on 'change plan settings" and click "change advanced power settings," then scroll down to "display." You can change the "dim display after" setting to be whatever you want.

Just a quick note, unless your computer has a light sensor, you can't actually use the Adaptive Brightness service.

I think your solution may work, as I have changed my settings so that is the default when I am plugged in only and I don't experience the problem. I'd would recommend that if you stick to your solution, you change it (similar to my second solution) when using only battery power or you can watch your battery life drop fairly noticeably.

-Hari Ganti

Stephanie,

It is possible to disable the service if you are still interested in this. Additionally, you can also change a few settings in the power management to make it stop dimming. For the first, typeservices.msc into the search box then hit enter (or hit Windowskey + r and typeservices.msc if the first way doesn't work). Then, you should see as one of the first options in the list that pops up the Adaptive Brightness service. Clicking on it gives you the option to start and stop it. Right clicking, then clicking properties will show you a "startup type" option where you can disable it from the dropdown list.

Alternatively, you can click the battery meter, choose "more power options" and find the plan you wish to use (If I understand you correctly, you are using the high performance mode). Click on 'change plan settings" and click "change advanced power settings," then scroll down to "display." You can change the "dim display after" setting to be whatever you want.

Just a quick note, unless your computer has a light sensor, you can't actually use the Adaptive Brightness service.

I think your solution may work, as I have changed my settings so that is the default when I am plugged in only and I don't experience the problem. I'd would recommend that if you stick to your solution, you change it (similar to my second solution) when using only battery power or you can watch your battery life drop fairly noticeably.

 

-Hari Ganti

I know this is old but just to add I disabled this option plus making changes to the power options and still Windows 7 dims the display when ever it wants. Typical Microsoft. Most non useful and annoying feature ever.

OK. I guess you'll have to disable the feature altogether. In start menu Search field, type Power Options and press Enter. Here, you should click "Choose when to turn off the display" on the left of the windows and then set "Dim the display" option to 'Never'.

Hello, I had the same problem which the bright remained in "adaptive bright" spite that the option was disabled.

My machine is HP 8440p and after long hours searching for the correct answer to this problem and trying each one of them I found how to solve this problem (in my machine).

If all of those solutions do not work to you, you may try this:

-Restart the pc

-Enter to your Bios System (I pressed F10 quickly when the pc turned on).

(the function key to enter to your BIOS system can vary depending of your machine).

-Go to "System Configuration" and If you're lucky, you will find the option "Ambient Light Sensor" or "Adaptive Brightness" turned on. Just turn off the option if you want to disable adaptive light sensor and Problem Solved!

I hope that this is of great help for you all !