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Thread: Backlight isn't turning on

  1. #1
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    Sep 2011
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    Unhappy Backlight isn't turning on

    Dear Linux community,
    I am new to the OS and I have just installed it as dual-boot on my laptop. However, whenever I boot into Ubuntu(the latest version) the OS works perfectly except from the fact that I can only see if i squint my eyes since the Backlight isn't turned on no matter what I try.

    Sincerely and not an idiot,
    Metalmine

  2. #2
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    Re: Backlight isn't turning on

    Hi metalmine, have you tried hitting the Ctrl and F7 buttons at the same time? Well the Ctrl button is down just keep tapping F7 until your back light is bright enough.

  3. #3
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    Re: Backlight isn't turning on

    Quote Originally Posted by sammiev View Post
    Hi metalmine, have you tried hitting the Ctrl and F7 buttons at the same time? Well the Ctrl button is down just keep tapping F7 until your back light is bright enough.
    I will try right now. Thank you.

  4. #4
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    Re: Backlight isn't turning on

    Quote Originally Posted by metalmine View Post
    I will try right now. Thank you.
    Sorry... It's the Fn and F7 button. Give this a try and post back.

  5. #5
    Join Date
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    Re: Backlight isn't turning on

    Quote Originally Posted by sammiev View Post
    Sorry... It's the Fn and F7 button. Give this a try and post back.
    This actually depends on the laptop's model...

    On my Sorny Vaio it's Fn+F5/F6 to decrease/increase brightness.

    Look for a little sun or a lightbulb in a different color (mine are blue, the same color as the Fn key)

    Also, check under System/Preferences/Power Management. There are options there to set the brightness settings.

    If none of those help, open a terminal and post the output of
    sudo lshw

    This will give a list of the hardware on your machine.

    Also, a description of your laptop would be helpful.

    On a slightly unrelated note, you should take a look at this to know not to run commands blindly (but don't worry, lshw is safe):
    http://ubuntuforums.org/announcement.php?a=54

    And finally, welcome to the forums and Ubuntu
    Shamelessly plugging my GLog! (GeekLog) in every post I can
    If your problem is solved, please do take the time to mention it and Mark the Thread as Solved!

  6. #6
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    Sep 2011
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    Re: Backlight isn't turning on

    Thanks ill try

  7. #7
    Join Date
    Sep 2011
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    Re: Backlight isn't turning on

    oh wait..........a minute.....whats a terminal? @patrik77

  8. #8
    Join Date
    Nov 2007
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    305
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    Ubuntu

    Re: Backlight isn't turning on

    The Terminal is like the Command Prompt in Windows.

    Under Gnome it would be in the Applications / Accessories / Terminal menu. In Unity (the default interface in Ubuntu 11.04) I have no idea where it is, but in the menu somewhere.
    Shamelessly plugging my GLog! (GeekLog) in every post I can
    If your problem is solved, please do take the time to mention it and Mark the Thread as Solved!

  9. #9
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    Re: Backlight isn't turning on

    Quote Originally Posted by patryk77 View Post
    The Terminal is like the Command Prompt in Windows.

    Under Gnome it would be in the Applications / Accessories / Terminal menu. In Unity (the default interface in Ubuntu 11.04) I have no idea where it is, but in the menu somewhere.
    I can't edit grub with gedit... and i forgot my root password

  10. #10
    Join Date
    Aug 2007
    Location
    a puddle in Manchester
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    9,198
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    Ubuntu 13.10 Saucy Salamander

    Re: Backlight isn't turning on

    You won't need your root password, just your user password.
    What hardware is this on?
    MacBook Pro 10,1 retina

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