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Thread: How to turn off auto adjustment brightness on Portege R830?

  1. How to turn off auto adjustment brightness on Portege R830?
    #1
    Beginner
    Join Date
    Jan 2012
    Posts
    4
    hello

    i have R830-13D, windows 7 x64 utlimate.
    the "problem" is auto change lcd backlight depends of content of screen

    for example - when i set brightness level to 2 and read some newsites (white background, black text) - it's ok for me. then, i open another website with black background and yellow text - lcd backlight changing down so i have to manually change it up by Fn+F7 to level 3.
    and so on - when i change tab in browser to "normal" website - white background/black text - backlight automatically going up (looks like sequentially growing up by 3-4 little steps) and i have to decrease it back to level 2.

    i can see this "issue" both for toshiba display driver (download on support page) and for intel display driver.

    how can i disable this feature? any idea?

  2. Re: How to turn off auto ajustment brightness on Portege R830?
    #2
    Beginner
    Join Date
    Jan 2012
    Posts
    4
    p.s. auto ajustment happens only on battery, but i can't locate any settings about it (in windows power options / bios)

  3. Re: How to turn off auto ajustment brightness on Portege R830?
    #3
    I donít have this notebook model and Iím not sure if I found the right way how to do this but check please page 64 in userís manuals.
    Maybe is there described how to do this.

    Please send some feedback.

  4. Re: How to turn off auto ajustment brightness on Portege R830?
    #4
    Beginner
    Join Date
    Jan 2012
    Posts
    4
    sorry, i'm too much lazy to download manual :D

    but i solve the problem
    *at intel display panel - power tab - power source/battery - power conservation feature - display power saving technology - uncheck*

    and now all is ok, predictable and wonderful :D

    p.s. i've spent so much time to discover it because by default "power source" selected for "plugged in" and there are no additional settings - the settings appears only for "battery" option.

    hope this topic canhelp someone else :)

  5. Re: How to turn off auto ajustment brightness on Portege R830?
    #5
    Beginner
    Join Date
    Jul 2016
    Location
    UK
    Posts
    1
    For Linux ubuntu / kubuntu (tried on 16.04):

    Go to System Settings > Energy Saving > Energy Saving (= the top) button

    Three tabs appear (On AC Power: On Battery : On Low Battery).

    On each of these you can check / uncheck boxes to chose between automatic and manual control, and use the slider to set the screen brightness you want.

    HTH

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