kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

** Tags added: bios-outdated-38

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https://bugs.launchpad.net/bugs/1535005

Title:
  Display brightness is not adjustable

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I can't adjust display brightness of my laptop due to that my battery
  is getting drained soon this reduces my laptop performance on Ubuntu
  system while I can adjust on Windows please fix this issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-53-generic 3.13.0-53.89
  ProcVersionSignature: Ubuntu 3.13.0-53.89-generic 3.13.11-ckt19
  Uname: Linux 3.13.0-53-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  umesh      2397 F.... pulseaudio
   /dev/snd/controlC0:  umesh      2397 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Jan 17 03:34:26 2016
  HibernationDevice: RESUME=UUID=8d0f512d-2043-4a0b-83c0-3fc24ea19fdd
  InstallationDate: Installed on 2015-01-13 (368 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: LENOVO 80E3
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-53-generic.efi.signed root=UUID=dd65051a-1811-4eda-8e26-6c24c3b0cf44 ro acpi_backlight=vendor quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-53-generic N/A
   linux-backports-modules-3.13.0-53-generic  N/A
   linux-firmware                             1.127.12
  SourcePackage: linux
  StagingDrivers: rts5139
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/26/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: A2CN25WW(V1.07)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Lancer 5B2
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0F82990 WIN
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo G50-45
  dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82990WIN:cvnLENOVO:ct10:cvrLenovoG50-45:
  dmi.product.name: 80E3
  dmi.product.version: Lenovo G50-45
  dmi.sys.vendor: LENOVO

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