So somehow I managed to lose the ability to connect to any WiFi hotspot when inside my Ubuntu. As the machine’s WiFi card works fine when inside Windows, it was logical that the problem was the drivers installed. So here’s what I did that worked.
Find the card ID:
lspci -nn -d 14e4:
Should return something like:
Broadcom Corporation BCM4306 802.11bgn Wireless Network Adapter [14e4:4320] (rev 03)
This is what we’re after:
[14e4:4320] (rev 03)
Locate the appropriate driver from the Broadcom Wireless Table found here:
http://askubuntu.com/questions/55868/installing-broadcom-wireless-drivers
PCI.ID 14.04 LTS 16.04+
------------------------------------------------------------------------------------
14e4:0576 Special Case #1 UNKNOWN
14e4:4301 firmware-b43-installer firmware-b43-installer
14e4:4306 firmware-b43-installer firmware-b43-installer
14e4:4306 rev 02 firmware-b43-installer firmware-b43-installer
14e4:4306 rev 03 firmware-b43-installer firmware-b43-installer
14e4:4307 firmware-b43-installer firmware-b43-installer
14e4:4311 firmware-b43-installer firmware-b43-installer
14e4:4311 rev 01 firmware-b43-installer firmware-b43-installer
14e4:4312 firmware-b43-installer firmware-b43-installer
14e4:4313 firmware-b43-installer firmware-b43-installer
14e4:4315 firmware-b43-installer firmware-b43-installer
14e4:4315 rev 01 firmware-b43-installer firmware-b43-installer
14e4:4318 firmware-b43-installer firmware-b43-installer
14e4:4318 rev 02 firmware-b43-installer firmware-b43-installer
14e4:4319 firmware-b43-installer firmware-b43-installer
14e4:4320 rev 02 firmware-b43-installer firmware-b43-installer
14e4:4320 rev 03 firmware-b43-installer firmware-b43-installer
14e4:4321 firmware-b43-installer firmware-b43-installer
14e4:4324 firmware-b43-installer firmware-b43-installer
14e4:4325 firmware-b43-installer firmware-b43-installer
14e4:4328 firmware-b43-installer firmware-b43-installer
14e4:4329 bcmwl-kernel-source bcmwl-kernel-source
14e4:432a bcmwl-kernel-source bcmwl-kernel-source
14e4:432b bcmwl-kernel-source bcmwl-kernel-source
14e4:432c bcmwl-kernel-source bcmwl-kernel-source
14e4:432d bcmwl-kernel-source bcmwl-kernel-source
14e4:4331 firmware-b43-installer firmware-b43-installer
14e4:4335 firmware-b43-installer firmware-b43-installer
14e4:4350 firmware-b43-installer firmware-b43-installer
14e4:4353 Special Case #1 UNKNOWN
14e4:4353 rev 01 Special Case #1 UNKNOWN
14e4:4357 Special Case #1 UNKNOWN
14e4:4358 bcmwl-kernel-source bcmwl-kernel-source
14e4:4359 bcmwl-kernel-source bcmwl-kernel-source
14e4:4360 UNKNOWN UNKNOWN
14e4:4365 bcmwl-kernel-source bcmwl-kernel-source
14e4:4365 rev 01 bcmwl-kernel-source bcmwl-kernel-source
14e4:43a0 bcmwl-kernel-source bcmwl-kernel-source
14e4:43ae rev 02 UNKNOWN UNKNOWN
14e4:43b1 bcmwl-kernel-source bcmwl-kernel-source
14e4:43b1 rev 03 bcmwl-kernel-source bcmwl-kernel-source
14e4:4727 bcmwl-kernel-source bcmwl-kernel-source
14e4:4727 rev 01 bcmwl-kernel-source bcmwl-kernel-source
14e4:a962 firmware-b43-installer firmware-b43-installer Clear out the currently installed driver:
sudo apt-get purge bcmwl-kernel-source
Prepare the system
Build an index of available packages:
sudo apt update
update the Ubuntu list of PCI.IDs:
sudo update-pciids
Installing the package
sudo apt install , in my case this would be
sudo apt install bcmwl-kernel-source
There will be a prompt to disable secure boot upon the next system reboot. Grant it. After the install, proceed to reboot and again follow the prompts. It’s important to pay attention while the whole thing is booting up as you can miss the timed prompt which can just get cancelled after the time expires and proceed on its merry way and everything will just be the same as before.
Sources:
http://askubuntu.com/questions/55868/installing-broadcom-wireless-drivers
