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This problem also happens to my Acer Aspire E5-551G with AMD FX-7500 Radeon R7 and Broadcom Corporation BCM43142 under 14,04, 14.10, 15.04 and 15.10.
Bluetooth doesn't work, following error using the terminal command dmesg:  "Direct firmware load for brcm/BCM.hcd failed with error -2". I hope to get a solution soon. It is a bit irritating to own a new laptop, but not able to use WiFi and Bluetooth.

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https://bugs.launchpad.net/bugs/1416892

Title:
  Bad WiFi connection and no working Bluetooth with BCM43142

Status in bcmwl package in Ubuntu:
  Confirmed

Bug description:
  Two different problems with the same device:

  1. Bluetooth doesn't work at all. The device is detected properly and
  the driver is apparently installed, but no connection can be
  established.

  2. WiFi connection is half so strong as with other devices or the same
  computer with Windows. It also gets lost if farther away than 3 meters
  without walls inbetween from the router.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: bcmwl-kernel-source 6.30.223.141+bdcom-0ubuntu2
  ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13
  Uname: Linux 3.13.0-45-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  Date: Sun Feb  1 20:49:12 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-12-28 (34 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  SourcePackage: bcmwl
  UpgradeStatus: No upgrade log present (probably fresh install)

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