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Adjusting brightness in Ubuntu 13.10 on HP EliteBook

Published 2013-10-17 (Modified 2013-10-20)

I just installed a fresh copy of Ubuntu 13.10, and it was very bright. Literary very bright, as I could not adjust the brightness of my screen. Not sure if it was possible in earlier versions, as i never worked with this particular PC in dimmed light before.

In order to enable the brightness control to interact with my PC (a HP Elitebook), I had to write some changes to the GRUB.

To open the GRUB config, I used Nano

sudo nano /etc/default/grub

Then changed this line

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

into this

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

This enabled my brightness buttons on my keyboard. And then updating GRUB with

sudo update-grub

And one restart later, I could dim the brightness to a less eye burning level.

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