kernel-packages team mailing list archive

[Kemel Zaidan aka Legendario <1389456@xxxxxxxxxxxxxxxxxx>]

It is the same for T440 on Ubuntu 14.04.3 with linux 3.13.0-65-generic

9.189536] thinkpad_acpi: ThinkPad ACPI Extras v0.25
[    9.189536] thinkpad_acpi: http://ibm-acpi.sf.net/
[    9.189537] thinkpad_acpi: ThinkPad BIOS GJET82WW (2.32 ), EC unknown
[    9.189537] thinkpad_acpi: Lenovo ThinkPad T440, model 20B7003HBR
[    9.190078] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx
[    9.190091] thinkpad_acpi: radio switch found; radios are enabled
[    9.190149] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver
[    9.190149] thinkpad_acpi: Disabling thinkpad-acpi brightness events by default...
[    9.191111] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked
[    9.191467] thinkpad_acpi: Console audio control enabled, mode: monitor (read only)
[    9.192481] input: ThinkPad Extra Buttons as /devices/platform/thinkpad_acpi/input/input9


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

** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1389456

Title:
  "thinkpad_acpi: Unsupported brightness interface" error message during
  boot with Thinkpad T440S

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  During the boot, the following message shows up:

  [   12.448192] thinkpad_acpi: Unsupported brightness interface, please
  contact ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx

  I am using Ubuntu 14.04 64 bit.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-39-generic 3.13.0-39.66
  ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
  Uname: Linux 3.13.0-39-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  jing       2128 F.... pulseaudio
   /dev/snd/controlC0:  jing       2128 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Nov  5 09:08:46 2014
  HibernationDevice: RESUME=UUID=4bfed795-9c38-418e-b097-83b17523308e
  InstallationDate: Installed on 2014-06-28 (129 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 20AQA02QHH
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-39-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-39-generic N/A
   linux-backports-modules-3.13.0-39-generic  N/A
   linux-firmware                             1.127.7
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/21/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GJET72WW (2.22 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AQA02QHH
  dmi.board.vendor: LENOVO
  dmi.board.version: 0B98405 STD
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGJET72WW(2.22):bd02/21/2014:svnLENOVO:pn20AQA02QHH:pvrThinkPadT440s:rvnLENOVO:rn20AQA02QHH:rvr0B98405STD:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AQA02QHH
  dmi.product.version: ThinkPad T440s
  dmi.sys.vendor: LENOVO

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