3 Apprentice

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540 Posts

September 16th, 2014 07:00

Hi danyasd,

Thanks for the post. There are a couple of features managed in Windows 8.1 that will automatically control your systems LCD brightness. I would first suggest making sure your latest BIOS and drivers are updated with those released on the Dell Drivers & Downloads site: http://www.dell.com/support/home/us/en/19?c=us&l=en&s=dhs

Unfortunately as no drivers have been written for the Vostro V131 and the 8.1 operating system (only Windows 7/8) I can’t be sure all functionality from the version of Windows the system shipped with will be available in your current installation.

http://windows.microsoft.com/en-us/windows/adjust-monitor-brightness-contrast#1TC=windows-7

Windows 8.1 will adjust the brightness of the display based on how much light is reaching the tablet's ambient light sensor. This feature is referred to as 'adaptive brightness' and it can be disabled in Windows. 


To turn adaptive brightness on or off:

  1. Open Power Options by clicking the Start button , clicking Control Panel, clicking System and Security, and then clicking Power Options.
  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.
  5. To turn adaptive brightness on or off when your computer is running on battery power, click On battery, and then, in the list, click On or Off.
  6. To turn adaptive brightness on or off when your computer is plugged into an outlet, click Plugged in, and then, in the list, click On or Off.
  7. Click Apply. Click OK.

 

If you are using the Windows Modern User Interface (MUI):

  1. Pull the Charms bar from the right and Click Settings.
  2. Click Change PC Settings.
  3. On the PC Settings screen, Click PC and Devices.
  4. Click Power and sleep.
  5. At the top of the screen should be a toggle for Brightness. Slide the toggle to the Off position to disable adaptive brightness.


The Intel Drivers / Control panel should also have a “Power Saving” and brightness field that will allow you to configure automatic screen dimming if these Windows settings have no effect.

Thanks,   

2 Posts

September 21st, 2014 06:00

Windows 8.1 will adjust the brightness of the display based on how much light is reaching the tablet's ambient light sensor.

No, this is not a tablet. It's a Vostro V131, and it does not have an ambient light sensor. Because of that, I can't find settings like this. 

I have the latest drivers and BIOS. 

Thank you for your help so far!

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