You're using the wl driver for wireless, which is separate from the kernel and needs to be rebuilt for each new kernel version. Your logs show that the module isn't loaded. Sometimes a change in a kernel update will cause the build to fail, but I just installed against 3.13.0-53.89 and didn't see any build problems. A couple basic things you could try are loading the module manually (sudo modprobe wl) and running 'dkms status' and seeing what it says for the kernel you're having problems with; if the status isn't "installed" then there may be errors in /var/lib/dkms/bcmwl/<version>/3.13.0-53-generic/x86_64/log/make.log which may help explain what's wrong.
** Also affects: bcmwl (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1463845 Title: Regression: no wifi in macbook pro 11,1 Status in bcmwl package in Ubuntu: New Status in linux package in Ubuntu: Confirmed Bug description: Prior kernels in 12.04 such as 3.13.0-13-generic and linux- image-3.13.11-031311ckt16-generic had a working suspend and a working wifi. The latest kernel does not manage to get the wifi up. Additionally upon booting the dialog to enter the password takes tens of seconds to become active while the laptop attempts to connect to the internet. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-extra-3.13.0-53-generic 3.13.0-53.89 ProcVersionSignature: Ubuntu 3.13.0-53.89-generic 3.13.11-ckt19 Uname: Linux 3.13.0-53-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: albert 2013 F.... pulseaudio /dev/snd/controlC0: albert 2013 F.... pulseaudio CurrentDesktop: Unity Date: Wed Jun 10 09:49:25 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2014-09-16 (267 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) IwConfig: eth1 no wireless extensions. lo no wireless extensions. MachineType: Apple Inc. MacBookPro11,1 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-53-generic root=UUID=1fe82ec9-9c83-4e33-9506-2f7afb8d9d64 ro libata.force=noncq quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-53-generic N/A linux-backports-modules-3.13.0-53-generic N/A linux-firmware 1.127.12 RfKill: 0: hci0: Bluetooth Soft blocked: yes Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/12/2014 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP111.88Z.0138.B07.1402121134 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-189A3D4F975D5FFC dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro11,1 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-189A3D4F975D5FFC dmi.modalias: dmi:bvnAppleInc.:bvrMBP111.88Z.0138.B07.1402121134:bd02/12/2014:svnAppleInc.:pnMacBookPro11,1:pvr1.0:rvnAppleInc.:rnMac-189A3D4F975D5FFC:rvrMacBookPro11,1:cvnAppleInc.:ct10:cvrMac-189A3D4F975D5FFC: dmi.product.name: MacBookPro11,1 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1463845/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp