[Bug 1171848] [NEW] No possibility to operate Ambient Light Sensor on Latitude D830 because of kernel handles Fn-combination instead of BIOS

[BakLAN]

Public bug reported:

According to Dell Latitude D830 manual, <Fn> and left-arrow key should
activate the ambient light sensor, which controls brightness of the
display based on light level in the current environment. I've checked it
in WinPE and in GRUB - it works well. But in user account in my Kubuntu
13.04 <Fn> and left-arrow key returns:

(XEV output)

KeyPress event, serial 40, synthetic NO, window 0x4000001,
root 0x103, subw 0x0, time 4948865, (162,-13), root:(164,45),
state 0x0, keycode 201 (keysym 0x1008ffb1, XF86TouchpadOff), same_screen YES, XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False

So, as we see, this is mistake and it should not return any code because
it processes through BIOS and must switch on/of ambient light sensor to
operate correctly according to laptop manual.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
Date: Tue Apr 23 15:19:14 2013
InstallationDate: Installed on 2013-02-28 (53 days ago)
InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.1)
MarkForUpload: True
ProcEnviron:
 LANGUAGE=
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=uk_UA.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to raring on 2013-03-16 (38 days ago)

** Affects: udev (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug kubuntu raring

** Package changed: xorg (Ubuntu) => udev (Ubuntu)

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https://bugs.launchpad.net/bugs/1171848

Title:
  No possibility to operate Ambient Light Sensor on Latitude D830
  because of kernel handles Fn-combination instead of BIOS

Status in “udev” package in Ubuntu:
  New

Bug description:
  According to Dell Latitude D830 manual, <Fn> and left-arrow key should
  activate the ambient light sensor, which controls brightness of the
  display based on light level in the current environment. I've checked
  it in WinPE and in GRUB - it works well. But in user account in my
  Kubuntu 13.04 <Fn> and left-arrow key returns:

  (XEV output)

  KeyPress event, serial 40, synthetic NO, window 0x4000001,
  root 0x103, subw 0x0, time 4948865, (162,-13), root:(164,45),
  state 0x0, keycode 201 (keysym 0x1008ffb1, XF86TouchpadOff), same_screen YES, XLookupString gives 0 bytes:
  XmbLookupString gives 0 bytes:
  XFilterEvent returns: False

  So, as we see, this is mistake and it should not return any code
  because it processes through BIOS and must switch on/of ambient light
  sensor to operate correctly according to laptop manual.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: xorg 1:7.7+1ubuntu4
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  Date: Tue Apr 23 15:19:14 2013
  InstallationDate: Installed on 2013-02-28 (53 days ago)
  InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.1)
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=uk_UA.UTF-8
   SHELL=/bin/bash
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: Upgraded to raring on 2013-03-16 (38 days ago)

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