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[Anthony Wong <anthony.wong@xxxxxxxxxx>]

OEM project bug: LP #1284036.

** Changed in: linux (Ubuntu)
     Assignee: Anthony Wong (anthonywong) => David Henningsson (diwic)

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https://bugs.launchpad.net/bugs/1381856

Title:
  [Dell Latitude E5550] Microphone mute key does not work on this system

Status in HWE Next Project:
  Triaged
Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  CID: 201406-15271 Dell Latitude E5550

  The microphone mute key does not work at all.

  Key event cannot be captured by "xev" or "sudo showkey -s"
  But keycode 248 would be returned when testing with sudo showkey -k

  Alsa info:
  http://www.alsa-project.org/db/?f=006099fcf08709c82a74dba986a907a602a868ab

  Also note that with file at /etc/udev/hwdb.d/60-dell-mic-mute-hotkey.hwdb generated with the following content:
  # Dell platform kernel driver 
  keyboard:name:Dell WMI hotkeys:dmi:bvn*:bvr*:bd*:svnDell*:pn*
   KEYBOARD_KEY_150=f20 # Mic mute toggle

  And with udev database updated: sudo udevadm hwdb -u

  The microphone mute key works, but the mic mute led does not work.
  (Also the icon is not correct, which show a speaker instead of a mic)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-37-generic 3.13.0-37.64
  ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
  Uname: Linux 3.13.0-37-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     1530 F.... pulseaudio
   /dev/snd/controlC1:  ubuntu     1530 F.... pulseaudio
  CRDA:
   country TW:
   	(2402 - 2472 @ 40), (3, 27)
   	(5270 - 5330 @ 40), (3, 17), DFS
   	(5735 - 5815 @ 40), (3, 30)
  CurrentDesktop: Unity
  Date: Wed Oct 15 23:17:51 2014
  HibernationDevice: RESUME=UUID=02cbc1f1-a261-484c-8fc2-05b68f73446d
  InstallationDate: Installed on 2014-10-09 (6 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Latitude E5550
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=d3b20ae5-9ff8-49b3-b640-1c6a9f264710 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-37-generic N/A
   linux-backports-modules-3.13.0-37-generic  N/A
   linux-firmware                             1.127.7
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/25/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: T43
  dmi.board.name: 0141B2
  dmi.board.vendor: Dell Inc.
  dmi.board.version: X02
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrT43:bd07/25/2014:svnDellInc.:pnLatitudeE5550:pvr01:rvnDellInc.:rn0141B2:rvrX02:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E5550
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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