Dell Laptop Adaptive Brightness (Precision M4800) Turn Off

The problem:

When I go to a bright screen (such as a webpage with mostly white), the screen is bright. When I go to a page that has mostly gray, the screen dims. When I go to a very dark page, it dims more.I can go to a webpage that has white on the top, and black on the bottom 2/3 and scroll and the brightness and/or contrast will change dynamically on the one website.

Why I don’t like it:

I have tried everything to get the auto-brightness thing to turn off. As a photographer, I really hate that the screen changes brightness and contrast automatically. I want the screen to display at a fixed brightness and contrast. If I need to change it, I’ll change it myself. I want the brightness to stay the same so that I can evaluate photographs for the brightness content within them. If I swap between a dark photo and a bright photo, the screen will get brighter. I hate it. Apparently many other people also hate this auto brightness/contrast.

What I’ve tried:

The basics have long ago been implemented.

Customize Power Plan

Change Plan Settings – Change Advanced Plan Settings – Display – Enable Adaptive Brightness : Battery – OFF, Plugged in – OFF

I’ve changed this for all my power plans.


Turn off Adaptive Brightness Service. I do not have this service listed.

Sensor Monitoring Service. This is disabled.

BIOS Light Sensor: I do not have any settings for this

BIOS Adaptive Brightness: I do not have any settings for this

NVidia Control Panel: Dynamic Contrasts Enhancement (not checked)

Nvidia Power Managment Mode: Maximum Performance

Intel Control Panel: My computer is not switching between Intel and Nvidia

Adjust my screen brightness automatically. I do not have this setting, so my computer does not have an ambient light sensor.

Load New NVidia Driver (again)

I just loaded Video_Driver_X9T7N_WN32_9.18.13.4752_A11.EXE, which is dated April 8, 2015. I did a full clean install of this driver and it has so far worked.

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