Ubuntu – Cannot change brightness (Ubuntu 16.04 LTS and onward)

16.04brightnessscreen

I'm new to linux systems in general (I'm using Ubuntu 16.04 LTS) and I'm having difficulty in changing the brightness of my notebook.

When I use the Fn+F8 or Fn+F9 the brightness bar shows up but there is no change in the actual brightness of the screen.

I tried every method discribed in this post (How to adjust screen brightness in Ubuntu 14.04 (Trusty Tahr)?) to no success.
Installing and using the xbacklight has no effect, same for editing the brightness file in the "intel_backlight" file.

Anyone knows how to solve this?

Best Answer

  • This does not make your brightness function keys work, but is a workaround.

    Install Brightness Controller with the following commands:

    sudo add-apt-repository ppa:apandada1/brightness-controller
    sudo apt update
    

    For Version 1 with up to 4 Monitor Support:

    sudo apt install brightness-controller-simple
    

    Brightness Controller Version 1

    For Version 2 with Multi Monitor Support and Color Temperature support:

    sudo apt install brightness-controller
    

    enter image description here

    Note: This does not decrease the intensity of backlight, so won't save your batteries. But you can use this as a last resort to save your eyes. This also works in desktops, where there is no option to control brightness.

  • Related Question