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

Verified with  mainline kernel 3.16.0-031600-generic #201408031935, wifi
slider works as expected.

rfkill status before and after the slider change:
ubuntu@201404-14986:~$ rfkill list
1: dell-wifi: Wireless LAN
	Soft blocked: no
	Hard blocked: no
2: dell-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
3: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
4: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
ubuntu@201404-14986:~$ rfkill list
1: dell-wifi: Wireless LAN
	Soft blocked: no
	Hard blocked: yes
2: dell-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: yes
3: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: yes

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https://bugs.launchpad.net/bugs/1379203

Title:
  [Dell Precision M2800] Wifi slider cannot turn wifi off, but works for
  BT

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  CID: 201404-14986 Dell Precision M2800

  The wireless slider on this system can't turn the Wifi off, but it
  could turn the BT on/off normally.

  Steps:
  1. Install 14.04.1 + update (3.13.0-37), boot to desktop
  2. Try to turn the wifi off with the slider

  Expected result:
  * Both wifi and BT could be controlled by the wifi slider.

  Actual result:
  * Only BT could be turned off with the slider.

  Wifi slider "ON"
  ubuntu@201404-14986:~$ rfkill list
  1: phy0: Wireless LAN
  	Soft blocked: no
  	Hard blocked: no
  2: hci0: Bluetooth
  	Soft blocked: no
  	Hard blocked: no

  Wifi slider "OFF"
  ubuntu@201404-14986:~$ rfkill list
  1: phy0: Wireless LAN
  	Soft blocked: no
  	Hard blocked: no

  The wifi slider event cannot be detected with xev and sudo showkey -s
  With sudo showkey -k, it returns 
  keycode 240 press
  keycode 240 press

  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
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ubuntu     1776 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     1776 F.... pulseaudio
  CRDA:
   country TW:
   	(2402 - 2472 @ 40), (3, 27)
   	(5270 - 5330 @ 40), (3, 17), DFS
   	(5735 - 5815 @ 40), (3, 30)
  CurrentDesktop: Unity
  Date: Thu Oct  9 03:30:35 2014
  HibernationDevice: RESUME=UUID=404890af-28cf-4569-a49d-10fc2fcf1cf9
  InstallationDate: Installed on 2014-10-09 (0 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Dell Inc. Precision M2800
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic.efi.signed root=UUID=c670a1f7-2c9c-4fd2-9d34-a750d36d46b9 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: 04/28/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A01
  dmi.board.name: 0CYT5F
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA01:bd04/28/2014:svnDellInc.:pnPrecisionM2800:pvr01:rvnDellInc.:rn0CYT5F:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Precision M2800
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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