Mint Install Broadcom BCM4311 Wireless Driver

Uninstall the bcmwl-kernel-source package by issuing the following command on a terminal:

sudo apt-get remove bcmwl-kernel-source

make sure that the firmware-b43-installer and the b43-fwcutter packages are installed

sudo apt-get install firmware-b43-installer b43-fwcutter

type into terminal:

cat /etc/modprobe.d/* | egrep 'bcm'

(you may want to copy this) and see if the term 'blacklist bcm43xx' is there

if it is, type cd /etc/modprobe.d/ and then sudo gedit blacklist.conf

put a # in front of the line: blacklist bcm43xx

then save the file (I was getting error messages in the terminal about not being able to save, but it actually did save properly).