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[Bug 1397739] Status changed to Confirmed


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

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  Function buttons for brightness etc stopped to work

Status in linux package in Ubuntu:

Bug description:
  In 14.04 using kernel 3.13 the special function buttons of this HP
  Compaq nx6310 laptop used to work correctly. I could increase or
  decrease brightness, invoke the battery settings (mostly useless but
  it worked), switch to an external display or enter sleep mode. The key
  functions are invoked using Fn + the key with the designated function
  as listed below.

  Fn + F3 - Sleep - button/sleep SBTN 00000080 00000000 K
  Fn + F4 - Switch to external display - video/switchmode VMOD 00000080 00000000
  Fn + F8 - Battery information - button/battery BAT 00000080 00000000 K
  Fn + F9 - Brightness down - video/brightnessdown BRTDN 00000087 00000000
  Fn + F10 - Brightness up - video/brightnessup BRTUP 00000086 00000000

  I went through the troubleshooting steps described at
  https://wiki.ubuntu.com/Hotkeys/Troubleshooting. In 14.10 none of
  these buttons work. Using acpi_listen I found that no events are fired
  in 14.10, but under 14.04 these buttons do indeed fire ACPI events and
  thus work correctly. The ACPI events listed above are fired in 14.04
  using kernel 3.13 but are not fired under 14.10 using kernel 3.16.

  Using xbacklight I can still change the brightness in 14.10, if that
  information is of any help.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-25-generic 3.16.0-25.33
  ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
  Uname: Linux 3.16.0-25-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
   /dev/snd/controlC0:  giancarlo   1921 F.... lxpanel
  CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: 'iw'
  CurrentDesktop: LXDE
  Date: Sun Nov 30 22:24:13 2014
  HibernationDevice: RESUME=UUID=207b9cef-a34d-4cbe-b903-4e129ffc1789
  InstallationDate: Installed on 2014-08-25 (97 days ago)
  InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: Hewlett-Packard HP Compaq nx6310 (RH334ET#ABD)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-25-generic root=UUID=a3bac2e9-23b4-4965-b4fb-322b8037fca4 ro quiet splash vt.handoff=7
   linux-restricted-modules-3.16.0-25-generic N/A
   linux-backports-modules-3.16.0-25-generic  N/A
   linux-firmware                             1.138
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-11-04 (26 days ago)
  dmi.bios.date: 02/21/2008
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68YDU Ver. F.0E
  dmi.board.name: 30AA
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 58.13
  dmi.chassis.asset.tag: CNU645278T
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr68YDUVer.F.0E:bd02/21/2008:svnHewlett-Packard:pnHPCompaqnx6310(RH334ET#ABD):pvrF.0E:rvnHewlett-Packard:rn30AA:rvrKBCVersion58.13:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP Compaq nx6310 (RH334ET#ABD)
  dmi.product.version: F.0E
  dmi.sys.vendor: Hewlett-Packard

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