Ubuntu On Sony Vaio FW Series

Tips & Tricks related to Sony Vaio FW series laptops

Brightness bug with dual display mode

with 4 comments

So I moved to Lucid. It was a pain to make fglrx work after upgrade. It somehow messed up with nvidia drivers and while Xorg was loading fglrx it was loading glx and dri extensions fron nvidia package. I fixed symlinks and installed fglrx 10.7.
Brighness control works ok while I’m on laptop without external display. But when I’m in dual display mode brightness control works only from power managmer. While using fn keys brightness popup doesn’t move.
Well, it’s time to fix a new bug.

Written by egaistek

August 5, 2010 at 01:00

Posted in Vaio

Tagged with , ,

4 Responses

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  1. I am using ubuntu 10.04 on Sony vaio FW VGNFW480JT and I use these commands to control the screen brightness. Hope these are useful for you people.

    ubu@ubu-laptop:~$ cat /proc/acpi/video/VGA/LCD/brightness
    levels: 4 16 28 40 52 64 76 88 100
    current: 100

    sudo su –
    echo -n 76 > /proc/acpi/video/VGA/LCD/brightness

    some other useful commands are ,

    cat /proc/acpi/battery/BAT0/state
    cat /proc/acpi/battery/BAT0/info
    cat /proc/acpi/video/VGA/LCD/brightness


    August 5, 2010 at 22:15

    • This is the only way I could get my brightness to work with 10.04 upgrade.
      Thanx Ajit.


      September 20, 2010 at 21:01

  2. Good morning everyone!

    I have a sony vaio fw, ATI, and ubuntu 10.04
    Currently suspend to ram is not working on my laptop.

    I would like to know if suspend to RAM works on Karmic Koala? what kernel version and type is it (32/64bit)?

    Also in case anybody knows how to fix the suspend to RAM issue in a new installation of Ubuntu 10.04 please let me know

    Thanks in advance!


    August 18, 2010 at 22:06

  3. Hey egaistek,

    *Bump bump* how about a new thread for 10.10?

    I’m on a fw11m and don’t have any fn keys working (on 10.10).



    November 7, 2010 at 17:40

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