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[Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>]

Also note that if you reboot the system with Wifi slide on "Off" position, the system will be booted with wifi hard blocked.
You could turn it on, and it will back to work as expected.

However, you won't be able to turn it off again.


** Tags added: 201305-13527 taipei-lab

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https://bugs.launchpad.net/bugs/1378725

Title:
  [Dell Precision M4800] Wifi slider does not work

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  CID: 201305-13527 Dell Precision M4800

  The wifi slider on this system does not work.

  With sudo showkey -k, keycode 240 could be detected while turning it on/off.
  But nothing can be detected with sudo showkey -s or xev

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-32-generic 3.13.0-32.57 [modified: boot/vmlinuz-3.13.0-32-generic]
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ubuntu     4041 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     4041 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  8 05:28:01 2014
  HibernationDevice: RESUME=UUID=46ed949d-eff8-48e9-b337-6425f480cf12
  InstallationDate: Installed on 2014-10-08 (0 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Precision M4800
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic.efi.signed root=UUID=e7f55d08-44a4-447e-8fc6-563864d60df4 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-32-generic N/A
   linux-backports-modules-3.13.0-32-generic  N/A
   linux-firmware                             1.127.5
  RfKill:
   0: phy0: Wireless LAN
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/02/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A06
  dmi.board.name: 0FVDR2
  dmi.board.vendor: Dell Inc.
  dmi.board.version: X02
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA06:bd01/02/2014:svnDellInc.:pnPrecisionM4800:pvr01:rvnDellInc.:rn0FVDR2:rvrX02:cvnDellInc.:ct9:cvr:
  dmi.product.name: Precision M4800
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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