kernel-packages team mailing list archive

[Gianluca Cavalli <cavalligianluca@xxxxxxxxxx>]

As dmachine writes in arch forum
(bbs.archlinux.org/viewtopic.php?id=203602) adding acpi_backlight=video
in the grub parameters solves the problem.

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https://bugs.launchpad.net/bugs/1537979

Title:
  Lenovo Z500

Status in linux package in Ubuntu:
  Invalid

Bug description:
  The Brightness keys not supported. Using Nvidia and Intel graphic
  cards.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-23-generic 4.2.0-23.28
  ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
  Uname: Linux 4.2.0-23-generic x86_64
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  pensivegroot   1464 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Jan 26 09:59:08 2016
  HibernationDevice: RESUME=UUID=24719b74-64d3-4398-a12d-1c3a9af21cec
  InstallationDate: Installed on 2016-01-17 (8 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: LENOVO 20202
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-23-generic.efi.signed root=UUID=9c7c5a6c-ebc4-4429-8c14-efe9e464a1f8 ro quiet
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-23-generic N/A
   linux-backports-modules-4.2.0-23-generic  N/A
   linux-firmware                            1.149
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/10/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 71CN45WW(V1.18)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: INVALID
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900004WIN8 STD SGL
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad Z500
  dmi.modalias: dmi:bvnLENOVO:bvr71CN45WW(V1.18):bd05/10/2013:svnLENOVO:pn20202:pvrLenovoIdeaPadZ500:rvnLENOVO:rnINVALID:rvr31900004WIN8STDSGL:cvnLENOVO:ct10:cvrLenovoIdeaPadZ500:
  dmi.product.name: 20202
  dmi.product.version: Lenovo IdeaPad Z500
  dmi.sys.vendor: LENOVO

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