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[Launchpad Bug Tracker <1218744@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1218744

Title:
  Fn+F6 does not work with kernel option "acpi_backlight=vendor".

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  [HARDWARE]
  Lenovo G580 (2689-7LJ)

  [OS]
  ubuntu 12.04.3-64bit point release(clean install in UEFI mode)

  [TITLE]
  Fn+F6 does not work with kernel option "acpi_backlight=vendor".

  [How To Reproduce]
  1. edit /etc/default/grub & add "acpi_backlight=vendor"

  	GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
  					or
  	GRUB_CMDLINE_LINUX="acpi_backlight=vendor"

  2. sudo update-grub

  3. reboot

  [Actual Result]
  Fn+F6(touchpad enable/disable) does not work.

  [Expected Result]
  Fn+F6 toggle -> appear notification -> touchpad enable/disable

  [Workaround]
  kernel option(acpi_backlight=vendor) is remove.
  but Fn+up/down(brightness) can not control.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.8.0-29-generic 3.8.0-29.42~precise1 [modified: boot/vmlinuz-3.8.0-29-generic]
  ProcVersionSignature: Ubuntu 3.8.0-29.42~precise1-generic 3.8.13.5
  Uname: Linux 3.8.0-29-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.4
  Architecture: amd64
  Date: Fri Aug 30 14:44:05 2013
  InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=ja_JP.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-lts-raring
  UpgradeStatus: No upgrade log present (probably fresh install)

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