Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.8 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1627359 Title: wifi doesn't work after wake up (brcmsmac) Status in linux package in Ubuntu: Incomplete Bug description: wifi doesn't work after wake up (brcmsmac) macbook air 4,2 ProblemType: Bug DistroRelease: elementary 0.4 Package: linux-image-4.4.0-36-generic 4.4.0-36.55 [modified: boot/vmlinuz-4.4.0-36-generic] [origin: Ubuntu] ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16 Uname: Linux 4.4.0-36-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: tomas 1745 F.... pulseaudio CurrentDesktop: Pantheon Date: Sat Sep 24 20:30:19 2016 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=f38cd8e2-f431-4560-a708-202f2b60ea6e InstallationDate: Installed on 2016-09-16 (7 days ago) InstallationMedia: elementary OS 0.4 "Loki" - Stable amd64 (20160909) MachineType: Apple Inc. MacBookAir4,2 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.4.0-36-generic.efi.signed root=UUID=5c914172-c233-4cba-9778-675b14693fa2 ro rootflags=subvol=@ quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-36-generic N/A linux-backports-modules-4.4.0-36-generic N/A linux-firmware 1.157.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1627359/+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