Adjust the brightness in Ubuntu 10.10

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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 :-)
Jean-François Pillou

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