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[Lars Peter Thomsen <lapeth@xxxxxxxxx>]

Additionally, the file mentioned in the error (brcmfmac43602-pcie.txt)
does not exist anywhere in the system.

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https://bugs.launchpad.net/bugs/1575321

Title:
  brcmfmac: Direct firmware load failed

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I've upgraded kernel from pre-release linux-
  image-4.4.0-18-generic:amd64 to linux-image-4.4.0-21-generic and am
  now getting random Wifi failures (was stable before)

  Those leave traces like the following in dmesg

  brcmfmac 0000:02:00.0: Direct firmware load for
  brcm/brcmfmac43602-pcie.txt failed with error -2

  Usually rmmod brcmfmac && modprobe brcmfmac successfully load the
  driver, and wifi is functional once more

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  peter      1994 F.... pulseaudio
  Date: Tue Apr 26 20:59:10 2016
  HibernationDevice: RESUME=UUID=39ea85a5-736e-4257-8844-e7da04637612
  InstallationDate: Installed on 2016-02-11 (74 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160211)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 003: ID 04f3:21d5 Elan Microelectronics Corp. 
   Bus 001 Device 002: ID 0a5c:6410 Broadcom Corp. 
   Bus 001 Device 004: ID 0c45:6713 Microdia 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Dell Inc. XPS 15 9550
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-21-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro noprompt persistent quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/25/2016
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 01.01.19
  dmi.board.name: 0N7TVV
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr01.01.19:bd01/25/2016:svnDellInc.:pnXPS159550:pvr:rvnDellInc.:rn0N7TVV:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 15 9550
  dmi.sys.vendor: Dell Inc.

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