Adjust the brightness in Ubuntu 10.10

April 2018

Adjust the brightness in Ubuntu 10.10


After installing Ubuntu 10.10 on my laptop, I was faced with a problem when I wanted to change the brightness of the display: Fn + left / right, but it does not work.


  • Open the Terminal
  • Enter the following command=> sudo gedit /etc/default/grub

Note that you can use your favorite text editor (nano, vim, ...) until you start editing the file as root.
  • In grub editor, change the line "GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to "GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=Linux"
  • Back into the terminal and update your grub with the command "sudo update-grub"
  • Restart your computer

Enjoy :-)
Published by bionik. Latest update on February 24, 2011 at 05:10 PM by crapoulou.
This document, titled "Adjust the brightness in Ubuntu 10.10," is available under the Creative Commons license. Any copy, reuse, or modification of the content should be sufficiently credited to CCM (
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