Mackbook Air (Early) 2014 Wi-Fi Not Working in Ubuntu 22.04.
When macbooks become older, they are unable to be updated such as installing the latest MacOs on the system. Installing Ubuntu on an older Macbook Air can make your old macbook more useful.
Before starting the process, a USB Wi-Fi dongle may be necessary. There are other methods to install the driver for the wifi card that do not require a USB Wi-Fi dongle, but in this guide a USB Wi-Fi is necessary. You will need internet access to perform the updates on the macbook air, and the wifi dongle will allow the macbook to receive internet access.
Open the terminal in Ubuntu, and type in these commands in the terminal.
sudo apt-get update
sudo apt-get purge bcmwl-kernel-source
sudo apt-get install firmware-b43-installer
Then go into the search bar and type in “additional drivers.” The driver for the Wi-Fi card should now be listed as a selection. Select the driver and install it.
