Comment 13 for bug 1107109

To get this to downgrade successfully, after doing:

sudo apt-get install bcmwl-kernel-source=5.100.82.38+bdcom-0ubuntu6

I also had to add "blacklist brcmsmac" to /etc/modprobe.d/blacklist-bcm43.conf. Otherwise, it was using the brcmsmac driver. I'm not sure how this worked before, maybe Jockey did something when I originally installed bcmwl.