Ok Folks, I've been struggling with this as well and I can provide some information and help.
BACKGROUND: First of all, there are at least four versions of the Broadcom BCM43602 SoC which is supported by the brcmfmac driver: Source: https://wireless.wiki.kernel.org/en/users/drivers/brcm80211 BCM43602 14e4:43ba Supported in 3.17+ BCM43602 14e4:43bb Supported in 3.19+, 2 GHz device BCM43602 14e4:43bc Supported in 3.19+, 5 GHz device BCM43602 14e4:aa52 Supported in 4.2+, “raw” device You need to run lscpi -nn to determine which one you have installed. I happen to have the first one which ends on 43ba. For a long period of time I was not able to get 5Ghz running on my wifi. Running on 2.4Ghz Wifi was fine but the speeds were limited. SOLUTION: As it turns out, if you have ANY bluetooth device connected to your laptop, the chip will reserve the 5GHz spectrum and your WiFi will only work on 2.4Ghz. Weird. I know... My advise to you is to remove ALL bluetooth devices completely from your Bluetooth manager. I am not talking just turning off your bluetooth devices. I am talking about complete unpairing them from your laptop. In my case, I had a bluetooth mouse. I unpaired it from my laptop and immediately, my WiFi switched to 5Ghz! Hope this helps anyone who is struggling with those chips. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1487524 Title: 14e4:43ba Broadcom BCM43602 not seeing 5Ghz range Status in linux-firmware package in Ubuntu: Fix Released 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-firmware/+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
