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[Launchpad Bug Tracker <1248720@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package unity-control-center -
14.04.3+14.04.20150916-0ubuntu1

---------------
unity-control-center (14.04.3+14.04.20150916-0ubuntu1) trusty; urgency=medium

  [ Ning Yu ]
  * Block power callback unless it's triggered by the user.(LP: #1248720)

  [ CI Train Bot ]
  * No-change rebuild.

 -- Sebastien Bacher <seb128@xxxxxxxxxx>  Wed, 16 Sep 2015 09:33:42
+0000

** Changed in: unity-control-center (Ubuntu Trusty)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1248720

Title:
  Bluetooth ON/OFF button switches OFF automatically

Status in One Hundred Papercuts:
  Confirmed
Status in OEM Priority Project:
  New
Status in gnome-control-center package in Ubuntu:
  New
Status in unity-control-center package in Ubuntu:
  Fix Released
Status in gnome-control-center source package in Trusty:
  Confirmed
Status in unity-control-center source package in Trusty:
  Fix Released

Bug description:
  [Impact]

   * On trusty, we met this issue, you can't turn on/off bluetooth, it
  affected the other OEM project which needed by Lenovo, HP and Dell.

  [Test Case]

   * open the unity-control-center, and select 'Bluetooth', try to turn
  on/off in top checkbox.

  I am on ThinkPad T61 with Ubuntu 13.10 installed. I disabled bluetooth
  on startup by adding:

  "echo disable > /proc/acpi/ibm/bluetooth"

  to /etc/rc.local. When I open gnome-control-center -> Bluetooth and
  click on the "ON/OFF" switch button, it switches on for a fraction of
  a second and then switches back to off. Below are dmesg lines
  corresponding to this event:

  [   94.028110] usb 3-1: new full-speed USB device number 5 using uhci_hcd
  [   94.194320] usb 3-1: New USB device found, idVendor=0a5c, idProduct=2110
  [   94.194325] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
  [   94.194328] usb 3-1: Product: BCM2045B
  [   94.194330] usb 3-1: Manufacturer: Broadcom Corp
  [   94.388169] usb 3-1: USB disconnect, device number 5

  The workaround is to type "turn connectivity on/off" combination of my
  keyboard (FN+F5) -- then both wireless and bluetooth go off, and when
  I type it again, bluetooth comes back ON.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: gnome-control-center 1:3.6.3-0ubuntu45
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  Date: Wed Nov  6 20:41:45 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-10-18 (19 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MarkForUpload: True
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
  SourcePackage: gnome-control-center
  UpgradeStatus: No upgrade log present (probably fresh install)
  usr_lib_gnome-control-center:
   activity-log-manager          0.9.7-0ubuntu4
   deja-dup                      27.3.1-0ubuntu1
   gnome-control-center-datetime 13.10.0+13.10.20131023.2-0ubuntu1
   gnome-control-center-signon   0.1.7~+13.10.20130724.1-0ubuntu1
   gnome-control-center-unity    1.3+13.10.20131004-0ubuntu1

  [Regression Potential]

   * The patch was already accepted in lp:unity-control-center, just
  cherry picked into trusty, so no potential regression.

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