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[Norse <norse_dog@xxxxxxxx>]

re upgraded to -18 again today, problem does not repro. Potentially an
issue with a specific binary package?

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https://bugs.launchpad.net/bugs/1457672

Title:
  Wireless stops working when upgrading from -16 to -18 kernel on
  macbook air 2013

Status in bcmwl package in Ubuntu:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Today's upgrade from the -16 to the -18 kernel completely disables
  wireless on my 15.04 ubuntu install on a macbook air 2013. Reverting
  to the -16 kernel fixes the issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-18-generic:amd64 3.19.0-18.18
  ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
  Uname: Linux 3.19.0-16-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.17.2-0ubuntu1.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  roland     1630 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Thu May 21 14:33:31 2015
  HibernationDevice: RESUME=UUID=9e12a810-bfd8-43e5-a06f-c236be42f8b9
  InstallationDate: Installed on 2014-11-09 (193 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: Apple Inc. MacBookAir4,2
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-16-generic.efi.signed root=UUID=58091989-ee9b-4c99-afa8-fffa56a1f3af ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-16-generic N/A
   linux-backports-modules-3.19.0-16-generic  N/A
   linux-firmware                             1.143
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-04-23 (27 days ago)
  dmi.bios.date: 10/09/2013
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA41.88Z.0077.B11.1310091428
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-742912EFDBEE19B3
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookAir4,2
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-742912EFDBEE19B3
  dmi.modalias: dmi:bvnAppleInc.:bvrMBA41.88Z.0077.B11.1310091428:bd10/09/2013:svnAppleInc.:pnMacBookAir4,2:pvr1.0:rvnAppleInc.:rnMac-742912EFDBEE19B3:rvrMacBookAir4,2:cvnAppleInc.:ct10:cvrMac-742912EFDBEE19B3:
  dmi.product.name: MacBookAir4,2
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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