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Thread: 12.04 ubuntu screen brightness is reset after the screen is unlocked

  1. #1
    Join Date
    May 2012
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    12.04 ubuntu screen brightness is reset after the screen is unlocked

    hi gurus,

    I've a Ubuntu 12.04 installed in my samsung laptop.

    The screen brightness is reset after the screen is unlocked or when the screen goes to sleep and wakes up again.

    The screen brightness once set is not saved and is reset to the maximum. Which is quite annoying at times. Because I have to change the brightness level to the specified value every time.

    Is there a way to fix this issue.

    Regards,
    V

  2. #2
    Join Date
    Dec 2011
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    1

    Re: 12.04 ubuntu screen brightness is reset after the screen is unlocked

    Same here. I think Ubuntu should really focus on user experience too. These damn nuisance is what driving me back to Windows.

  3. #3
    Join Date
    Nov 2012
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    Xubuntu Development Release

    Re: 12.04 ubuntu screen brightness is reset after the screen is unlocked

    Please mark your thread as solved if you get a satisfactory response.

  4. #4
    Join Date
    May 2012
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    Re: 12.04 ubuntu screen brightness is reset after the screen is unlocked

    hi people,


    This is a simple thing. very basic infact. the objective is to make the backlight be set a limit every time the system is booted. or woken up after it goes to sleep.


    I mean how hard can it be.


    Why is this problem not yet solved in ubuntu 12.04.


    given that this one is a LTS.


    The problem is not yet solved


    Regards,
    vigneshm

  5. #5
    Join Date
    May 2012
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    8

    Re: 12.04 ubuntu screen brightness is reset after the screen is unlocked

    Hi,

    Found a temporary and limited solution for the problem,

    Have to edit the file.


    gksudo gedit /etc/rc.local

    then add the line


    echo 0 > /sys/class/backlight/intel_backlight/brightness

    exit 0
    this would make the brightness to be set to 0, every time the laptop wakes up or booted up.

    Coming to the limitation part.

    --> you have to manually edit the file every time you want to change the default value. It is hardcoded.

    --> if you open the "brightness and lock" then the brightness automatically sets it self to the max.


    Kudos,

    Vignesh M
    Last edited by vigneshm247; June 12th, 2013 at 09:35 PM. Reason: missed a carriage return

  6. #6
    Join Date
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    Re: 12.04 ubuntu screen brightness is reset after the screen is unlocked

    Quote Originally Posted by vigneshm247 View Post
    ...Coming to the limitation part.
    --> you have to manually edit the file every time you want to change the default value. It is hardcoded...
    Please see this: Setting brightness at Ubuntu startup
    Please mark your thread as solved if you get a satisfactory response.

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