Hello. I am trying to use elementary on my macbook pro, but i won't display wifi unless i plug in usb wifi dongle. So, the drivers are missing i suppose. I had this issue before and it was solved with a system update. Now how can i fix and enjoy elementary os?
Following steps fixes the problem.
Removing bcmwl-kernel-source package, then reboot:
sudo apt-get remove --purge bcmwl-kernel-source sudo reboot
Installing new broadcom firmware:
sudo apt-get install firmware-b43-installer
sudo modprobe -r b43 sudo modprobe b43
This did not work for me and my 15" Macbook Pro 2013. I had a bad ethernet cord, so solving this took 10x as long.
Running the Updates in AppCenter seems to be working. Click on the Broadcom Driver. Yes it worked after reboot. I have WiFi icon showing. Get Wired Connection and Run the Updates FIRST.
Then install the bcmwl-kernel-source Drivers (you have to click on them in AppCenter).
For the 2013 Macbook Pro, the secret is getting the Thunderbolt to RJ45 (Ethernet) dongle. Even after I connected it, I had no ethernet device name after [ip a]. I had to test on another machine to find out my ethernet cable was inconsistent.
Reboot after changing cables, connecting, etc. In case you end up here with an 2013 MBP or 2015 MBP, one way to dig out.