LCD brightness constantly changing with Intel Display Power Setting enabled

LCD brightness constantly changing with Intel Display Power Setting enabled



The following article is a guide to resolving a problem with the LCD brightness constantly changing depending on the type of content shown on the screen when Intel's Display Power Saving Technology is in use on your Dell PC.


Table of Contents:

  1. Does your screen brightness change depending on what is shown on the screen?
  2. Why is the Intel Graphics doing this?
  3. How to disable this function

Does your screen brightness change depending on what is shown on the screen?

If you have Intel's Display Power Saving Technology-enabled on your system, you may have noticed that the internal LCD screen changes the brightness of the screen automatically depending on what content is currently being displayed. The next section will explain why this is happening or you can go straight to the last section for troubleshooting steps to disable this function.

Note: This article only deals with Intel's Display Power Saving Technology. It does not deal with any other technology that could also affect the screen brightness. (Ambient Light Sensor, etc.)


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Why is the Intel Graphics doing this?

Intel Display Power Saving Technology (DSPT) is a power-saving feature in Intel’s latest range of mobile graphics chips which is described as reducing power consumption on the PC by altering the brightness and contrast of the display.

What does this mean?

Intel DPST controls the LCD backlight, by reducing the backlight as needed they can save power. This can be important on mobile systems running off of the battery. The aim is to automatically reduce the backlight brightness whilst maintaining good visuals onscreen. It analyzes the image to be shown and it uses a set of equations to change the chroma value of pixels and reduce the brightness of the backlight at the same time, which means you shouldn't see any distortion to the image onscreen. Intel says the latest version can save 70% of the power used by the backlight when watching media.

This constant re-adjustment, however, is noticeable to some people, especially if they often change between different applications and media. The next section will take you through disabling the function. We only recommend doing this if you are seeing issues with this technology.


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How to disable this function

Pick the control panel currently installed on your PC:

Intel Graphics and Media Control Panel

  1. Right-click on your desktop and select Graphics Properties from the menu that appears

  2. When the control panel opens, click on the power option

  3. Set the power source to on battery

  4. Un-Check the Display Power Saving Technology checkbox

  5. Click on OK

Intel Control Panel

Intel HD Graphics Control Panel

  1. Right-click on your desktop and select Graphics Properties from the menu that appears

  2. When the control panel opens, click on the power option

  3. Set the power source to Battery

  4. Select the Maximum Performance power plan

  5. Can you see the Display Power Saving Technology option?

    1. If YES, select Disable and click on OK

    2. If NO, you will want to edit this in Power Options

      1. Right-click on the Windows icon and select Power Options

      2. Click on additional power settings

      3. Click on Change advanced power settings

      4. In the Advanced Settings pop-up, click on the plus next to Display

      5. Click on the plus next to Enable adaptive brightness

      6. Change the options to OFF

Power Options


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Article ID: SLN309126

Last Date Modified: 11/25/2019 05:34 AM


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