Re: WiFi stopped working after upgrade
First observation: 14.10 is not LTS. In fact, it should be hitting EOL about now, which means you need to upgrade to a newer release (or roll back to 14.04, which is LTS and won't hit EOL until April 2019). You may want to consider doing a fresh install, given the problems you're having.
That said, my best guess is that your last update included a kernel upgrade that isn't playing well with your hardware. If you restart the machine, you should see the Grub screen (since it's dual-boot). If you select the "More Ubuntu options" (or something like that), it should list the available kernels. Go with the second newest. See if things go back to the way they were.
Otherwise, my next inclination would be hardware issues...
Edit: Vladlenin's response is from a more knowledgeable standpoint than mine. I have little experience with unorthodox drivers.
Last edited by newb85; July 21st, 2015 at 10:32 AM.
Jane, stop this crazy thing!