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Thread: Brightness Key Fix for Lenovo U350 running 10.04

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  1. #1
    Join Date
    Jun 2010
    Beans
    12
    Distro
    Ubuntu

    Brightness Key Fix for Lenovo U350 running 10.04

    I came across this fix, sadly i dont remember from where. It so that you can use the Fn+Up/Fn+Dn to adjust desired brightness on your display. This worked on a lenovo U350 running 10.04

    open terminal type in:

    sudo nano /etc/default/grub

    Change:
    GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash”
    to


    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi backlight=video"

    also change:

    GRUB_CMDLINE_LINUX_DEFAULT=”"

    to

    GRUB_CMDLINE_LINUX="nomodeset acpi backlight=video"

    then run:

    sudo update-grub

  2. #2
    Join Date
    May 2009
    Beans
    25

    Re: Brightness Key Fix for Lenovo U350 running 10.04

    hi im having a brightness issue myself i tried the fix but once i change

    GRUB_CMDLINE_LINUX_DEFAULT=”"

    to

    GRUB_CMDLINE_LINUX="nomodeset acpi backlight=video"
    i don't know how to exit the code and go back to the terminal to run the grub updater

  3. #3
    Join Date
    May 2009
    Beans
    25

    Re: Brightness Key Fix for Lenovo U350 running 10.04

    nvm got it to work just supplemented sudo nano for gksudo gedit then just saved and ran the update thanks

  4. #4
    Join Date
    Dec 2009
    Location
    Chicago, IL. USA
    Beans
    21
    Distro
    Ubuntu 10.04 Lucid Lynx

    Smile Re: Brightness Key Fix for Lenovo U350 running 10.04

    Awesome fix!! I have been using Ubuntu for a few years now and never cared to find this. This worked on my g530. Thank you

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