WiFi no longer works

Support & Help Requests
#1

I just updated to the most recent version of Ubuntu and now no WiFi. In the past it would scan to see what is available and now, nothing. I’ve rebooted, toggled WiFi on and off and still nothing

#2

Hello,
Could you go to a terminal and type this command and post the output here.
inxi -nn
also this one
rfkill list

#3

There’s an issue with wi-fi in Network Manager that appeared with Ubuntu 17.04. So if it didn’t happen for you in 17.04 and the issue appeared in 17.10, it’s unlikely that it’s that one, but just in case you can try the following:

  1. edit NM conf file:

    sudo pluma /etc/NetworkManager/NetworkManager.conf

  2. add the following two lines at the end of the file (or just the option in the relevant section if you already have a [device] one):

    [device]
    wifi.scan-rand-mac-address=no

  3. restart NM and check if your wi-fi works:

    sudo service network-manager restart

#4

Just installed 17.10 and same problem - WiFi doesn’t work.

Output requested by kc1di : -
mike@mike-Lenovo-Z580:~$ inxi -nm
Memory: Using dmidecode: root required for dmidecode
Network: Card-1: Realtek RTL8101/2/6E PCIE Fast/Gigabit Ethernet controller
driver: r8169
IF: enp2s0 state: up speed: 100 Mbps duplex: full
mac: 08:9e:01:XX:XX:XX
Card-2: Broadcom Limited BCM4313 802.11bgn Wireless Network Adapter
IF: N/A state: N/A mac: N/A
mike@mike-Lenovo-Z580:~$
mike@mike-Lenovo-Z580:~$
mike@mike-Lenovo-Z580:~$ rfkill list
0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: ideapad_bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: no
Hard blocked: no

Re tezag’s comment - /etc/NetworkManager/NetworkManager.conf has the two lines mentioned already at the bottom of the file.

#5

See this for information about Broadcom wireless set-up.

#6

mdooley :- Followed steps in your “Broadcom wireless tip”. All working now.
Many thanks for the quick response.