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cprofitt
Asked: 2014-03-03 19:56:48 +0800 CST

How to retain LCD brightness after reboot

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I frequently test different linux Distros and recently found a 'feature' that I would like to know how to turn on in Ubuntu. In my testing of Fedora 20 I noticed that it retained the LCD brightness settings on my laptop after a reboot. Ubuntu 13.10 nor 14.04 does this.

The laptop in question is a Lenovo T530. Does anyone know why/how Fedora (Gnome 3.10) does this? Can it be replicated in Ubuntu?

brightness

1 Answers

  1. I don't know how this is done in Fedora, but to do this in Ubuntu:

    First know the output name

    xrandr -q

    for example my output name is DVI-I-2

    The brightness can be changed like this:

    xrandr --output DVI-I-2 --brightness 1

    Now add this command to your startup programs or to the /etc/rc.local file.

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