its a brand new machine, so haven't tried previous kernel, but the vivid install image didn't even have the firmware for this particular chipset, so brcmfmac didn't work out of the box. will test with mainline kernel and see what happens.
-- 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/1487524 Title: Broadcom BCM43602 not seeing 5Ghz range Status in linux package in Ubuntu: Incomplete Bug description: On a MacbookPro12,1 (2015 model), the wireless works with the brcmfmac on a wily install out of the box, but can't see any APs on the 5GHz range even though there are APs broadcasting on 5Ghz. 03:00.0 Network controller: Broadcom Corporation BCM43602 802.11ac Wireless LAN SoC (rev 01) Subsystem: Apple Inc. Device 0152 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 256 bytes Interrupt: pin A routed to IRQ 49 Region 0: Memory at a0800000 (64-bit, non-prefetchable) [size=32K] Region 2: Memory at a0400000 (64-bit, non-prefetchable) [size=4M] Capabilities: <access denied> Kernel driver in use: brcmfmac $ sudo iwlist wlp3s0 scan|grep Freq Frequency:2.412 GHz (Channel 1) Frequency:2.422 GHz (Channel 3) ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.1.0-3-generic 4.1.0-3.3 [modified: boot/vmlinuz-4.1.0-3-generic] ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3 Uname: Linux 4.1.0-3-generic x86_64 ApportVersion: 2.18-0ubuntu7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC3: jbarnett 1545 F.... pulseaudio /dev/snd/controlC2: jbarnett 1545 F.... pulseaudio /dev/snd/controlC1: jbarnett 1545 F.... pulseaudio /dev/snd/controlC0: jbarnett 1545 F.... pulseaudio CurrentDesktop: GNOME Date: Fri Aug 21 08:46:15 2015 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=dd225ec0-47f4-49d8-a51c-a2547f8eb945 InstallationDate: Installed on 2015-08-21 (0 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20150819) MachineType: Apple Inc. MacBookPro11,4 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.1.0-3-generic.efi.signed root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.1.0-3-generic N/A linux-backports-modules-4.1.0-3-generic N/A linux-firmware 1.146 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/05/2015 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP114.88Z.0172.B04.1506051511 dmi.board.name: Mac-06F11FD93F0323C5 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro11,4 dmi.chassis.type: 9 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-06F11FD93F0323C5 dmi.modalias: dmi:bvnAppleInc.:bvrMBP114.88Z.0172.B04.1506051511:bd06/05/2015:svnAppleInc.:pnMacBookPro11,4:pvr1.0:rvnAppleInc.:rnMac-06F11FD93F0323C5:rvrMacBookPro11,4:cvnAppleInc.:ct9:cvrMac-06F11FD93F0323C5: dmi.product.name: MacBookPro11,4 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/1487524/+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