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

Add "options dell_laptop force_rfkill=1" into /etc/modprobe.d/dell.conf
will make the key "partially" work

Before the key press:
ubuntu@201408-15444:~$ rfkill list
0: dell-wifi: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: dell-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
3: brcmwl-0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
4: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no

After the key press:
ubuntu@201408-15444:~$ rfkill list
0: dell-wifi: Wireless LAN
	Soft blocked: no
	Hard blocked: yes
1: dell-bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: yes
2: phy0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
3: brcmwl-0: Wireless LAN
	Soft blocked: no
	Hard blocked: no
4: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no


I say it's partially working because if you re-enable the wireless and Bluetooth with the hot key, they're not hard blocked anymore, but Bluetooth indicator shows it's in OFF state.

Not sure if this is related to a not-working Bluetooth hardware (21D7).

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https://bugs.launchpad.net/bugs/1434442

Title:
  [Vostro 3549] Wireless key does not work on 14.04.2

Status in HWE Next Project:
  New
Status in linux-lts-utopic package in Ubuntu:
  New

Bug description:
  CID: 201408-15444 Vostro 3549

  The wireless key does not work on this system.

  Debugging information:
  ubuntu@201408-15444:~$ sudo showkey -k
  kb mode was ?UNKNOWN?
  [ if you are trying this under X, it might not work
  since the X server is also reading /dev/console ]

  press any key (program terminates 10s after last keypress)...
  keycode  28 release
  keycode 240 press
  keycode 240 release
  ^Ccaught signal 2, cleaning up...

  Nothing could be detected by "sudo showkey -s"

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.16.0-31-generic 3.16.0-31.43~14.04.1
  ProcVersionSignature: Ubuntu 3.16.0-31.43~14.04.1-generic 3.16.7-ckt5
  Uname: Linux 3.16.0-31-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri Mar 20 04:24:01 2015
  InstallationDate: Installed on 2015-03-20 (0 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  SourcePackage: linux-lts-utopic
  UpgradeStatus: No upgrade log present (probably fresh install)

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