** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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

You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.

  [HP WMI] Issues with brightness keys [HP ProBook 640 G1]

Status in linux package in Ubuntu:

Bug description:
  Three of the "function" keys on this laptop don't work at all: "Mute",
  "Brightness Down", and "Brightness Up". I believe these keys are
  controlled by WMI. Other buttons not controlled by WMI, such as
  "Volume Up" and "Volume Down" (both by ACPI), work fine. Setting
  display brightness via software (e.g., GUI slider) works fine.

  Sometimes other keys (Windows, up/down arrow, pgup/pgdn) are
  interpreted as "Brightness Down". This behavior seems to come and go
  randomly after each reboot.

  I have tried setting (separately) acpi_osi=Linux and
  acpi_backlight=vendor without effect.

  The hp_wmi driver raises these message at each boot:
  [   19.610528] hp_wmi: query 0xd returned error 0x5
  [   19.610569] input: HP WMI hotkeys as /devices/virtual/input/input14

  This system has the latest BIOS (1.43A, released 2018-01-25) and the
  latest Intel ME firmware (, released 2017-12-19).

  No output is generated when pressing these buttons with evtest
  (choosing option 8, "HP WMI hotkeys"), xev, or acpi_listen).

  I have attached the debugging information requested at
  although fwts method does not seem to be a valid command (anymore?).

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-12-generic 4.15.0-12.13
  ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
  Uname: Linux 4.15.0-12-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
   /dev/snd/controlC1:  vectro     1415 F.... pulseaudio
   /dev/snd/controlC0:  vectro     1415 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Fri Mar 23 17:15:19 2018
  HibernationDevice: RESUME=UUID=0f34a9a4-0160-489a-9325-45913b03eb06
  InstallationDate: Installed on 2018-03-23 (0 days ago)
  InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 
  MachineType: Hewlett-Packard HP ProBook 640 G1
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-12-generic 
root=/dev/mapper/internal-root ro quiet splash acpi_osi=Linux vt.handoff=1
   linux-restricted-modules-4.15.0-12-generic N/A
   linux-backports-modules-4.15.0-12-generic  N/A
   linux-firmware                             1.173
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/25/2018
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: L78 Ver. 01.43
  dmi.board.name: 2101
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 16.3C
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=PRO
  dmi.product.name: HP ProBook 640 G1
  dmi.product.version: A3009DD10303
  dmi.sys.vendor: Hewlett-Packard

To manage notifications about this bug go to:

Mailing list: https://launchpad.net/~kernel-packages
Post to     : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to