Adaptive Brightness

Description:
Uses the light sensors on the monitor (if available) to detect changes in ambient light and adjust the display brightness. If this service is stopped or disabled, the display brightness will not adapt to lighting conditions.

To turn adaptive brightness on or off:
  1. Open Power Options through System and Security in the Control Panel
  2. Under any plan, click Change plan settings.
  3. Click Change advanced power settings.
  4. In the list, expand Display, and then expand Enable adaptive brightness.
To enable the Ambient Light Sensor (ALS):
  1. Open Location and Other Sensors through Hardware and Sound in the Control Panel
  2. There the ALS hardware should be listed and can be enabled using the checkbox
More Info Adjusting brightness automatically using adaptive brightness

Adaptive brightness is not available in all editions of Windows 7.

Recommended state:
  • Manual
Default State:
  • Windows 7: Manual
Proces name:
Supports:
  • none
Depends:
  • none

Updated: 15 March 2010

Comments:

  1. nathan says:

    It isn't listed under display for me.

  2. Snakefoot says:

    nathan wrote:
    It isn’t listed under display for me.

    I don't have access to a computer with ALS chip, so I don't have any experience with this. But check that your ALS chip is enabled, and Microsoft also states that Adaptive Brightness is not available in all Win7 editions (Have updated the article about these extra details).

  3. ToucanSam says:

    I don't have the enable/disable adaptive brightness option on mine either, yet it constantly changes my brightness and it's driving me insane to the point that I want to snap my laptop in half. What can I do to fix it? I've tried changing just about any and all brightness options in about every combination I can think of.

  4. Christopher says:

    Adaptive brightness can be stopped or set to manual by following these steps:

    1) Windows+R
    2) Type "services.msc" (without quotes)
    3) Look for the service named Adaptive Brightness.
    4) Double-click Adaptive Brightness to open its properties and turn off or set to manual.
    5) ???
    6) Profit

    This service is convenient if your hardware has an ALS (ambient light sensor), otherwise it's fairly useless.

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