Ubuntu Wifi drivers not working after getting update

bake_betty

I have Ubuntu 16.04 installed on my laptop. It was working fine until one day an update was there. After the update, I am on kernel 4.15.0-13-generic and there it is. My Broadcom Wifi drivers were nowhere to be detected. On Notification panel, there is no option to switch ON/OFF wifi. result of lspci -nnk | grep 0280 -A3 : 02:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01) Subsystem: Foxconn...

Originally asked by Adarsh Maurya on Stack Exchange (askubuntu) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

The version of the Broadcom driver that matches your running kernel 4.15.0-xx is 6.30.223.271+bdcom-0ubuntu4. Because you started with and still have the apt repositories for Ubuntu 16.04, the system tries to install an earlier version; viz: Unpacking bcmwl-kernel-source (6.30.223.271+bdcom-0ubuntu1~1.2) ... Please open a terminal and do: wget http://mirrors.kernel.org/ubuntu/pool/restricted/b/bcmwl/bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb sudo dpkg -i bcmwl-kernel-source_6.30.223.271+bdcom-0ubuntu4_amd64.deb Reboot.

Full answer by chili555: https://askubuntu.stackexchange.com/a/1039424 (CC BY-SA 4.0).

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