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I have a Dell Inspiron 11 3000 Series laptop that has built in Dynamic Contrast/Brightness in the screen. The screen automatically adjusts it's brightness according to how many white pixels are on the screen.

In windows Dell has a "Quickset" utility that I download and is able to disable this Power Saving Feature, however "Quickset" is unavailable for linux and running it in wine hasn't proven fruitful. Anyone know how to disable Dell Dynamic Brightness in Ubuntu?

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Maybe dconf-editor could help you. I found in it an option that could rule the behavior of auto-brightness:

enter image description here

If you want to try, you can check if this option is enable or not installing dconf-editor.

So run this command:

sudo apt-get install dconf-editor

to install it. Now open dconf-editor and navigate to

com.ubuntu.system

Here you can see the auto-brightness option.

I hope this could help you.

  • I tried dconf write /com/ubuntu/touch/system/auto-brightness false and successfully created the key, but it had no effect. Auto-brightness still active. Maybe it is a bios setting? – Alexandre Schmidt Jun 30 '17 at 17:04
  • Another feedback: I tried all bios menus and options and found nothing related to auto-brightness. Only an option to set default brightness in AC mode and in battery mode. My PC is a Dell XPS 13. – Alexandre Schmidt Jun 30 '17 at 17:17
  • Update: it seems to be an issue related to the screen firmware. Dell has released an update intended to fix this. As I have Linux only here, I was unable to test it. Here's the link: dell.com/support/home/br/pt/brbsdt1/Drivers/… – Alexandre Schmidt Jul 3 '17 at 13:29

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