Does this control just keyboard backlight only or will it enable the ambient
light sensor to change display backlight as well since this is the full use
of the sensor? I haven't tried your solution yet but I would still flag this
as a bug if it doesn't control display backlight. I will report back later
today

On Sun, Oct 23, 2011 at 5:36 AM, Damian Beltrami
<804...@bugs.launchpad.net>wrote:

> Seems like this is a kernel issue, with users of other Distros
> experiencing the same problem.
>
> A fix is:
>
>  Added file sony-laptop.conf with single line:
>    options sony-laptop kbd_backlight=1
>  to /etc/modprobe.d/ and it seems to work fine now.
>
> As per http://www.fedoraforum.org/forum/showthread.php?t=268249
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/804595
>
> Title:
>  Sony Vaio VPCS132FX/B Ambient Light sensor does not work
>
> Status in “linux” package in Ubuntu:
>  Confirmed
>
> Bug description:
>  Sony Vaio VPCS132FX/B Ambient Light sensor does not work to dim
>  backlit keyboard and display. Backlight for Keyboard stays on
>  constantly with every key stroke and times out after a bit. Also Power
>  Manager does not dim display when "On Battery" when the option is
>  checked. This dramatically kills battery and makes the whole Intel
>  IPM(Intelligent Power Management) patch useless.... There is a patch
>  for the F Series posted on http://code.google.com/p/vaio-f11-linux/.
>  This patch only works with a plain linux kernel meaning I would lose
>  all the Ubuntu related patches to the plain linux kernel. I'm sure It
>   wouldn't be hard to apply this to a new kernel release. There has been
>  support added for Macbooks with the same type of ambient light sensor
>  hardware, is it possible that this can be streamlined to the Sony Vaio
>  line?
>
>   ProblemType: Bug
>  DistroRelease: Ubuntu 11.04
>  Package: gnome-control-center 1:2.32.1-0ubuntu15
>  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
>  Uname: Linux 2.6.38-8-generic x86_64
>  Architecture: amd64
>  Date: Fri Jul  1 19:12:12 2011
>  ExecutablePath: /usr/bin/gnome-keyboard-properties
>  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64
> (20110427.1)
>  ProcEnviron:
>   SHELL=/bin/bash
>   PATH=(custom, user)
>   LANGUAGE=en_US:en
>   LANG=en_US.UTF-8
>  SourcePackage: gnome-control-center
>  UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/804595/+subscriptions
>


-- 
Kyrillos Mossad
BS Electrical Engineering
New Jersey Institute of Technology

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Title:
  Sony Vaio VPCS132FX/B Ambient Light sensor does not work

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