After some recent software updates, which included a bunch of linux header files my wifi stopped working. At first it was showing up as UNCLAIMED in lshw, which I thought ment there was no driver for it. After following the steps here it was no longer unclaimed, but still not working. I then tried both of the answers here, the first one didn't work because apt couldn't find bcmwl-kernel-source (I have tried updating it). The second one appeared to work but did not result in wifi.
So I downloaded and ran the wifi-issues script and im posting the results here in the hope that there is some aspect of this I have failed to understand, and you can enlighten me.
########## wireless info START ##########
Report from: 26 Jul 2018 11:37 BST +0100
Booted last: 26 Jul 2018 00:00 BST +0100
Script from: 10 Jan 2018 20:04 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 16.04.5 LTS
Release: 16.04
Codename: xenial
##### kernel ############################
Linux 4.15.0-29-generic #31~16.04.1-Ubuntu SMP Wed Jul 18 08:54:04 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
\\boot\vmlinuz-4.15.0-29-generic, ro, initrd=boot\initrd.img-4.15.0-29-generic
##### desktop ###########################
Ubuntu
##### lspci #############################
03:00.0 Network controller [0280]: Broadcom Corporation BCM4360 802.11ac Wireless Network Adapter [14e4:43a0] (rev 03)
Subsystem: Apple Inc. BCM4360 802.11ac Wireless Network Adapter [106b:0117]
Kernel modules: bcma
0a:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM57762 Gigabit Ethernet PCIe [14e4:1682]
Subsystem: Apple Inc. NetXtreme BCM57762 Gigabit Ethernet PCIe [106b:00f6]
Kernel driver in use: tg3
##### lsusb #############################
Bus 002 Device 003: ID 05ac:8406 Apple, Inc.
Bus 002 Device 002: ID 0781:5583 SanDisk Corp.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 05ac:0291 Apple, Inc.
Bus 001 Device 006: ID 05ac:828f Apple, Inc.
Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth)
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
##### lsmod #############################
cfg80211 622592 0
##### interfaces ########################
[/etc/network/interfaces]
auto lo
iface lo inet loopback
##### ifconfig ##########################
ens9 Link encap:Ethernet HWaddr <MAC 'ens9' [IF1]>
inet addr:10.15.46.24 Bcast:10.15.47.255 Mask:255.255.254.0
inet6 addr: fe80::606c:cc7f:6e17:f91/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1683 errors:0 dropped:0 overruns:0 frame:0
TX packets:1294 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:741429 (741.4 KB) TX bytes:200117 (200.1 KB)
Interrupt:19
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:694 errors:0 dropped:0 overruns:0 frame:0
TX packets:694 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:61991 (61.9 KB) TX bytes:61991 (61.9 KB)
##### iwconfig ##########################
ens9 no wireless extensions.
lo no wireless extensions.
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 10.15.47.254 0.0.0.0 UG 100 0 0 ens9
10.15.46.0 0.0.0.0 255.255.254.0 U 100 0 0 ens9
152.78.111.198 10.15.47.254 255.255.255.255 UGH 100 0 0 ens9
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 ens9
##### resolv.conf #######################
nameserver 127.0.1.1
search soton.ac.uk
##### network managers ##################
Installed:
NetworkManager
Running:
root 920 1 0 11:31 ? 00:00:01 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: ens9
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: Broadcom Corporation
GENERAL.PRODUCT: NetXtreme BCM57762 Gigabit Ethernet PCIe
GENERAL.DRIVER: tg3
GENERAL.DRIVER-VERSION: 3.137
GENERAL.FIRMWARE-VERSION: 57762-a1.10
GENERAL.HWADDR: <MAC 'ens9' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.4/0000:05:00.0/0000:06:03.0/0000:08:00.0/0000:09:00.0/0000:0a:00.0/net/ens9
GENERAL.IP-IFACE: ens9
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: Wired connection 1
GENERAL.CON-UUID: 912792a3-e3ff-3196-af7c-ec5a4d93ba96
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1
GENERAL.METERED: no (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: 1000 Mb/s
CAPABILITIES.IS-SOFTWARE: no
WIRED-PROPERTIES.CARRIER: on
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{26}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 912792a3-e3ff-3196-af7c-ec5a4d93ba96 | Wired connection 1
IP4.ADDRESS[1]: 10.15.46.24/23
IP4.GATEWAY: 10.15.47.254
IP4.ROUTE[1]: dst = 152.78.111.198/32, nh = 10.15.47.254, mt = 100
IP4.ROUTE[2]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]: 152.78.110.110
IP4.DNS[2]: 152.78.111.81
IP4.DNS[3]: 152.78.111.113
IP4.DOMAIN[1]: soton.ac.uk
DHCP4.OPTION[1]: requested_subnet_mask = 1
DHCP4.OPTION[2]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[3]: subnet_mask = 255.255.254.0
DHCP4.OPTION[4]: server_name = 152.78.129.65
DHCP4.OPTION[5]: domain_name_servers = 152.78.110.110 152.78.111.81 152.78.111.113
DHCP4.OPTION[6]: ip_address = 10.15.46.24
DHCP4.OPTION[7]: filename = boot\x64\wdsnbp.com
DHCP4.OPTION[8]: requested_static_routes = 1
DHCP4.OPTION[9]: dhcp_server_identifier = 152.78.111.198
DHCP4.OPTION[10]: requested_time_offset = 1
DHCP4.OPTION[11]: broadcast_address = 10.15.47.255
DHCP4.OPTION[12]: requested_interface_mtu = 1
DHCP4.OPTION[13]: requested_domain_name_servers = 1
DHCP4.OPTION[14]: dhcp_message_type = 5
DHCP4.OPTION[15]: requested_broadcast_address = 1
DHCP4.OPTION[16]: routers = 10.15.47.254
DHCP4.OPTION[17]: requested_domain_name = 1
DHCP4.OPTION[18]: domain_name = soton.ac.uk
DHCP4.OPTION[19]: requested_routers = 1
DHCP4.OPTION[20]: expiry = 1532602130
DHCP4.OPTION[21]: host_name = henry-MacBookAir
DHCP4.OPTION[22]: requested_netbios_scope = 1
DHCP4.OPTION[23]: requested_wpad = 1
DHCP4.OPTION[24]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[25]: requested_netbios_name_servers = 1
DHCP4.OPTION[26]: network_number = 10.15.46.0
DHCP4.OPTION[27]: requested_domain_search = 1
DHCP4.OPTION[28]: requested_ntp_servers = 1
DHCP4.OPTION[29]: next_server = 152.78.129.65
DHCP4.OPTION[30]: dhcp_lease_time = 900
DHCP4.OPTION[31]: requested_host_name = 1
IP6.ADDRESS[1]: fe80::606c:cc7f:6e17:f91/64
IP6.GATEWAY:
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
##### NetworkManager profiles ###########
[[/etc/NetworkManager/system-connections/GWR WiFi]] (600 root)
[connection] id=GWR WiFi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=GWR WiFi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/_The Cloud]] (600 root)
[connection] id=_The Cloud | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=_The Cloud
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/SWR WiFi]] (600 root)
[connection] id=SWR WiFi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=SWR WiFi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Old Thorns]] (600 root)
[connection] id=Old Thorns | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=Old Thorns
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/0ad]] (600 root)
[connection] id=0ad | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=0ad
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Southern_WiFi]] (600 root)
[connection] id=Southern_WiFi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=Southern_WiFi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/DonnaAlfredBen]] (600 root)
[connection] id=DonnaAlfredBen | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=DonnaAlfredBen
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/BTWifi-Starbucks]] (600 root)
[connection] id=BTWifi-Starbucks | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=BTWifi-Starbucks
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/<<Lovely Leon>>]] (600 root)
[connection] id=<<Lovely Leon>> | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=<<Lovely Leon>>
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/The Old Thorns]] (600 root)
[connection] id=The Old Thorns | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=The Old Thorns
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/eduroam]] (600 root)
[connection] id=eduroam | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=eduroam
[802-1x] ca-cert=/etc/ssl/certs/QuoVardisRootCA2.crt
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/BTOpenzone-Starbucks]] (600 root)
[connection] id=BTOpenzone-Starbucks | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=BTOpenzone-Starbucks
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/EMFCSC]] (600 root)
[connection] id=EMFCSC | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=EMFCSC
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/first-wifi]] (600 root)
[connection] id=first-wifi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=first-wifi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Thames-Travel-Wi-fi]] (600 root)
[connection] id=Thames-Travel-Wi-fi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=Thames-Travel-Wi-fi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/SKYA893C]] (600 root)
[connection] id=SKYA893C | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=SKYA893C
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/SU(3)xSU(2)xU(1)]] (600 root)
[connection] id=SU(3)xSU(2)xU(1) | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=SU(3)xSU(2)xU(1)
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/virgintrainswifi]] (600 root)
[connection] id=virgintrainswifi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=virgintrainswifi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/SouthwestTrainsWiFi]] (600 root)
[connection] id=SouthwestTrainsWiFi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=SouthwestTrainsWiFi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/BTWiFi]] (600 root)
[connection] id=BTWiFi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=BTWiFi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/LectureHall1]] (600 root)
[connection] id=LectureHall1 | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=LectureHall1
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/Premier Inn Free Wi-Fi]] (600 root)
[connection] id=Premier Inn Free Wi-Fi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=Premier Inn Free Wi-Fi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/VirginTrainsEC-WiFi]] (600 root)
[connection] id=VirginTrainsEC-WiFi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=VirginTrainsEC-WiFi
[ipv4] method=auto
[ipv6] method=auto
[[/etc/NetworkManager/system-connections/CrossCountryWiFi]] (600 root)
[connection] id=CrossCountryWiFi | type=wifi | permissions=user:henry:;
[wifi] mac-address=<MAC address> | mac-address-blacklist= | ssid=CrossCountryWiFi
[ipv4] method=auto
[ipv6] method=auto
##### Netplan config ####################
##### iw reg get ########################
Region: Europe/London (based on set time zone)
country 00: DFS-UNSET
(2402 - 2472 @ 40), (N/A, 20), (N/A)
(2457 - 2482 @ 20), (N/A, 20), (N/A), PASSIVE-SCAN
(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
(5170 - 5250 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
(5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
(57240 - 63720 @ 2160), (N/A, 0), (N/A)
##### iwlist channels ###################
ens9 no frequency information.
lo no frequency information.
##### iwlist scan #######################
ens9 Interface doesn't support scanning.
lo Interface doesn't support scanning.
##### module infos ######################
[cfg80211]
filename: /lib/modules/4.15.0-29-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: D5B0789D4C423C81CCFB437
depends:
retpoline: Y
intree: Y
name: cfg80211
vermagic: 4.15.0-29-generic SMP mod_unload
parm: bss_entries_limit:limit to number of scan BSS entries (per wiphy, default 1000) (int)
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
##### module parameters #################
[cfg80211]
bss_entries_limit: 1000
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
facetimehd
##### modprobe options ##################
[/etc/modprobe.d/amd64-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist-bdc_pci.conf]
blacklist bdc_pci
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/hid_apple.conf]
options hid_apple fnmode=2
[/etc/modprobe.d/intel-microcode-blacklist.conf]
blacklist microcode
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
##### dmesg #############################
[ 127.843901] tg3 0000:0a:00.0 eth0: Tigon3 [partno(BCM957762) rev 57766000] (PCI Express) MAC address <MAC 'ens9' [IF1]>
[ 127.843908] tg3 0000:0a:00.0 eth0: attached PHY is 57765 (10/100/1000Base-T Ethernet) (WireSpeed[1], EEE[1])
[ 127.843913] tg3 0000:0a:00.0 eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
[ 127.843917] tg3 0000:0a:00.0 eth0: dma_rwctrl[00000001] dma_mask[64-bit]
[ 127.847956] tg3 0000:0a:00.0 ens9: renamed from eth0
[ 127.877265] IPv6: ADDRCONF(NETDEV_UP): ens9: link is not ready (repeated 2 times)
[ 130.849445] tg3 0000:0a:00.0 ens9: Link is up at 1000 Mbps, full duplex
[ 130.849464] tg3 0000:0a:00.0 ens9: Flow control is off for TX and off for RX
[ 130.849468] tg3 0000:0a:00.0 ens9: EEE is enabled
[ 130.849491] IPv6: ADDRCONF(NETDEV_CHANGE): ens9: link becomes ready
########## wireless info END ############
