I have installed Ubuntu 18.04 on my mid-2009 MacBook Pro, however, I am unable to even search for a wireless internet connection.
I have searched past question from this site and askubuntu re; no wi-fi adapter found, and found they either refer to past versions of Ubuntu or their implementation strategies (e.g. sudo update) does not to MacBooks or don’t work because they rely on internet connection that I do not have (e.g. sudo...reinstall kernel source).