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Thread: Manually mapping brightness function keys (Lemur Ultra)

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  1. #1
    Join Date
    Jul 2011
    Location
    San Dimas, California
    Beans
    71
    Distro
    Ubuntu Studio

    Manually mapping brightness function keys (Lemur Ultra)

    Hi everyone,
    So I'm a big fan of distrohopping and one of the things that bothers me with my amazing Lemur Ultra is that when trying other non Canonical supported distributions the System76 drivers will not allow you to install them. Distros like LinuxMint, PeppermintOS, WattOS etc.

    Xubuntu, Ubuntu Studio, Lubuntu, Kubuntu, no problem everything works flawlessly out of the box.

    But as a hopper I must hack away and try Fedora, Arch, Fuduntu, Gentoo or whatever.

    So does anyone know where I can find out how to manually configure my Fn keys so that when I hit Fn + F9 and Fn + F10 I'll be able to lower and raise the brightness by say oh 10%?

    I'm guessing that buried in the System76 drivers is a .conf file somewere but I'm not sure how to find it on my System in Ubuntu so I can pick it apart and try to adapt it to other distributions.

    As you don't mind not having brightness control via Fn keys or the card reader working straight away nearly any distribution will work 100%. Only exception has been wifi under FSF distributions like Trisquel or Parabola.

    My sincerest thanks to anyone that can point me in the right direction.
    Last edited by joe4ska; September 5th, 2012 at 08:52 AM.

  2. #2
    Join Date
    Jul 2011
    Location
    San Dimas, California
    Beans
    71
    Distro
    Ubuntu Studio

    Re: Manually mapping brightness function keys (Lemur Ultra)

    Okay i tried to hunt down some information after post based on similar questions

    for reference I ran the following commands
    $ ls /sys/class/backlight/

    acpi_video0 intel_backlight
    $ ls /sys/class/backlight/*/
    /sys/class/backlight/acpi_video0/:
    actual_brightness brightness max_brightness subsystem uevent
    bl_power device power type

    /sys/class/backlight/intel_backlight/:
    actual_brightness brightness max_brightness subsystem uevent
    bl_power device power type

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