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    [ubuntu] Re: Change default brightnes

    i added the following line in
    /etc/init.d/rc.local

    echo -n 20 > /proc/acpi/video/GFX0/DD03/brightness


    this should set default brightness to 20%
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    [ubuntu] Re: Unable to adjust screen brightness

    try this

    echo -n 20 > /proc/acpi/video/GFX0/DD03/brightness

    here 20 is the % brightness
    set it up to anything you like till 100

    you might have to do
    sudo su
    for this
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