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Thread: No brightness adjustment on samsun n210 (Intel GMA 3150)

  1. #21
    Join Date
    Jun 2010
    Beans
    1

    Re: No brightness adjustment on samsun n210 (Intel GMA 3150)

    Here's another way for those still searching. All of the setpci answers say use at your own risk, I'm not sure what the danger is, but after much experimenting I got mine working this way without that setpci script. I have a N150, but it should be the same.

    Here's what I did:

    in synaptic package manager go to settings, go to settings>repositories and chose other software tab.
    Add the following repository: ppa:voria/ppa
    click reload on the main package manager screen then search for samsung
    check the boxes by samsung-tools AND samsung-backlight
    click apply and load the packages. close package manager and reboot

    in the terminal run:
    sudo gedit /lib/udev/rules.d/95-keyboard-force-release.rules
    in the samsung section you will see a line with *N130*|*N140* etc. add |*N150* there
    also do the same for:
    sudo gedit /lib/udev/rules.d/95-keymap.rules

    substitute your model for N150 above if it isnt already there.


    The first part loads the samsung tools and backlight utility. this will also get some of your other function keys working. you can see the mappings in system>samsung tools preferences.
    The second part gets the mappings working for the fn-up and fn-down keys. it also keeps the fn-keys from going crazy by forcing them to release after being pressed.

    Hope this helps!

  2. #22
    Join Date
    Jul 2010
    Beans
    1

    Re: No brightness adjustment on samsun n210 (Intel GMA 3150)

    Quote Originally Posted by wcale View Post
    Hi,
    you can adjust brightness level by sending values directly to device, by setpci:

    setpci -s 00:02.0 f4.b=ff

    where 00:02.0 is the device address returned by lspci,and ff is a hexadecimal value <0,ff>. I have n210 running Debian, works well

    Because it wasn't easy to control brightness this way, I've written a program that adjusts brightness, you can download source from here:
    ftp://x.servebeer.com/bright.c
    //Edit: Port changed from 51300 to default ftp 21

    or here:
    http://info.wsisiz.edu.pl/~sieluzyc/bright.c

    It's a _very simple_ program, but it allows you to increase/decrease brightness by predefinied step, check actual brightness level and set level to a specific value.
    It uses the same method that setpci does (write to file in /sys), so plz remember this can be dangerous - use at your own risk.
    App does not assign any key shourtcuts, you have to do this manually.

    Wcale
    Worked perfectly for my Samsung N220 Mito under Ubuntu 10.04!
    Thank you so much!!!

  3. #23
    Join Date
    Jan 2009
    Location
    Buenos Aires
    Beans
    1
    Distro
    Ubuntu 8.10 Intrepid Ibex

    Re: No brightness adjustment on samsun n210 (Intel GMA 3150)

    Quote Originally Posted by wcale View Post
    Hi @fedira,
    1. It's VGA compatible controller.
    2. Yes. ff is the highest brightness level, 00 is brightness off. f4.b described in post #13
    Very good information!
    Thanks a lot.

    Joy

  4. #24
    Join Date
    Jun 2007
    Beans
    6

    Re: No brightness adjustment on samsun n210 / n220

    @Fred Ora

    Excellent advice!

    The screen brightness function buttons on my Samsung N220 weren't working at all.

    I followed your instructions for my N220 and now the brightness keys are working and the majority of the other function keys too.

    The setpci method was also working.

    Thanks!

  5. #25
    Join Date
    Jul 2010
    Location
    Marseille / Pune
    Beans
    11
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: No brightness adjustment on samsun n210 (Intel GMA 3150)

    Worked perfectly on my N210. Thank you Fred !

  6. #26
    Join Date
    Jul 2010
    Beans
    14

    Re: No brightness adjustment on samsun n210 (Intel GMA 3150)

    Did this but for this step "check the boxes by samsung-tools" I got the error depends "xbindkeys but it is not installable". This is for an NC10 running 10.0.4 Netbook version. The backlight package installed OK and I can adjust the brightness.

    Still bugs me though...any idea what this is?
    Last edited by Tony221268; August 4th, 2010 at 06:06 PM.

  7. #27
    Join Date
    Sep 2009
    Location
    Russia
    Beans
    318

    Re: No brightness adjustment on samsun n210 (Intel GMA 3150)

    Hello all,

    look in here: http://ubuntuforums.org/showthread.p...94#post9677094

    PS
    Don't forget that only root can do this.
    Debian GNU/Linux user

  8. #28
    Join Date
    May 2006
    Beans
    20

    Re: No brightness adjustment on samsun n210 (Intel GMA 3150)

    Try this ppa (Voria)
    https://launchpad.net/~voria/+archive/ppa

    It had support for hotkey on Samsung netbook

  9. #29
    Join Date
    Sep 2010
    Location
    Las Cruces, NM
    Beans
    2
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: No brightness adjustment on samsun n210 (Intel GMA 3150)

    Quote Originally Posted by Fred Ora View Post
    Hope this helps!
    Worked perfectly for my N230. Thank you so much!

  10. #30
    Join Date
    Sep 2009
    Beans
    2

    Re: No brightness adjustment on samsun n210 (Intel GMA 3150)

    Installed Lucid Netbook on my Samsung N150. Had the same problem with the function keys.
    Added the ppa:voria/ppa repository and followed the instructions in post #21. After reboot all function keys worked properly. I did not have to edit anything. Thanks Fred Ora!

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