Mostly I'm saving this off so if I ever have to get wireless in linux working on this machine again, I'll know how to do it. I hope that it saves someone else the 5+ hours it took me to solve this.
# Open a terminal window and run this: sudo apt-get update sudo apt-get remove bcmwl-kernel-source sudo rm /etc/modprobe.d/blacklist-bcm43.conf # If the blacklist-bcm43 file does not exist, don't sweat it. # Now you need to comment out bcm43xx in /etc/modprobe.d/blacklist.conf # In its place you will need to add blacklisting of ssb_hcd and ssb # So do this launch the editor that comes with Mint 14 to the conf file: sudo pluma /etc/modprobe.d/blacklist.conf # And in the editor, change this: blacklist bcm43xx # To this: blacklist ssb_hcd balcklis ssb # save and close. # Now run these to install the correct driver and firmware: sudo apt-get install b43-fwcutter sudo apt-get install firmware-b43-installer # After installing b43-fwcutter, make sure to REBOOT your PC!! # When you're back up, run the following Terminal commands: sudo modprobe -r b43 b44 b43legacy ssb sudo modprobe b43 sudo modprobe b44 # Then RETEST wireless. (Fn+F2 should re-enable it and turn on the wifi LED). # If the LED comes on, you're home free. # Right click on the network connection thing in the tray # and use the wireless tab to hook up to your router. # These settings should all stick when you reboot.
Special thanks to dwhitney67 for getting me 95% of the way there in this thread: http://ubuntuforums.org/showthread.php?t=2017612
Most of the text is copy-pasted from there, with a few very important tweaks without which the process does not work.