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I have a fairly new Macbook Pro and I installed Ubuntu 15.10 on it recently. Unfortunately, I can't seem to connect to WiFi.

I determined the chipset through the terminal:

$ lspci -nn | grep 0280
03:00.0 Network controller [0280]: Broadcom Corporation BCM43602 802.11ac Wireless LAN SoC [14e4:43ba] (rev 01)

I also can't see any 5GHz networks (not sure if that's a related problem). I've tried to fix it by following the solution here, where I downloaded the brcmfmac43602 firmware from the Linux firmware git repo, and then copied it to /lib/firmware/brcm. After rebooting my machine, I'm still unable to connect to WiFi.

EDIT:

Some diagnostics as follows

$ dmesg | grep brcm
[    8.822365] usbcore: registered new interface driver brcmfmac
[    8.847342] brcmfmac 0000:03:00.0: Direct firmware load for brcm/brcmfmac43602-pcie.txt failed with error -2
[    9.331289] brcmf_c_preinit_dcmds: Firmware version = wl0: Nov 10 2015 06:38:10 version 7.35.177.61 (r598657) FWID 01-ea662a8c
[    9.372960] brcmf_cfg80211_reg_notifier: not a ISO3166 code
[    9.377900] brcmfmac 0000:03:00.0 wlp3s0: renamed from wlan0
[   10.485443] brcmf_add_if: ERROR: netdev:wlp3s0 already exists
[   10.485446] brcmf_add_if: ignore IF event
[   10.624878] brcmf_add_if: ERROR: netdev:wlp3s0 already exists
[   10.624886] brcmf_add_if: ignore IF event

Seems like it couldn't load the firmware. Also, why did my network interface get renamed from wlan0 to wlsp3s01? Would like to leave it as wlan0 if possible.

$ lsmod | grep brcmfmac
brcmfmac              282624  0
brcmutil               16384  1 brcmfmac
cfg80211              548864  1 brcmfmac
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  • Please edit your question to add diagnostics: dmesg | grep brcm Is the correct driver loaded? lsmod | grep brcmfmac If not, load it and try the diagnostic again: sudo modprobe brcmfmac – chili555 Dec 16 '15 at 03:00

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