I am installing Mint 17.1 (MATE) on my MacBook Pro Retina (due to it having much better hardware than my PC, on which I successfully installed Mint 17.1 in the past).
I followed the instructions from this tutorial.
Everything goes great until the ability to connect to my WiFi. I followed the steps in the tutorial:
From the menu, run Administration -> Driver Manager The Driver Manager warns that it cannot install drivers... (because we're offline) Plug in the Linux Mint USB stick you used to install the operating system. Once it's mounted, press the "OK" button in the Driver Manager to dismiss the warning. Select the "bcmwl-kernel-source" driver Press "Apply changes"
So when I insert the Mint USB, the Warning message does indeed go away, but when I press "Apply Changes" , it shows a loading bar for just a second, but then goes right back to the old selection. I tried restarting it, with no luck.
The funny thing is, when I tried the above method when I was running just from the USB before the install, I was able to select the bcmwl-kernel-source and connect to the WiFi. It was only after the install was successfully completed that I could not repeat this.
Any and all help is really appreciated!