I'm very new to Ubuntu, but very excited to start learning it. First, I am running Ubuntu 14.04 currently on a mid 2011 MacbookPro on a dual-boot. Most of the questions I'm finding on here are regarding the initial wireless issues with installing Ubuntu 14.04, however I already have the wifi driver installed and it worked flawlessly for about 2 weeks and now I'm having some trouble. Main issue is that it will connect to wifi and work for a little while and then disconnect entirely from all wifi for awhile then connect again, and back and forth like this indefinitely.
In MacOS I'm having no trouble at all with continuous wifi connection. As for moving around a lot, this issue is primarily coming up when I'm on my school campus using their wifi system which registers devices using the MAC address and an online authentication. Because of this, I didn't have to re-register the computer because my MacOS was already registered under the same MAC address.
That being said. I have been sitting in the same spot for almost 6 hours and roughly every 5 minutes the wifi will disconnect or reconnect. I have also installed all available software updates available using the Software Updater in Ubuntu. MacOSX firmware is also fully up to date.
I've run the wifi_script in hopes that someone can diagnose the problem (link: http://pastebin.ubuntu.com/8351930/). Thanks in advance!
UPDATE: I finally got a chance to test if it still worked on my home router (airport etreme basestation 2008-ish model) and it seems that the issue is localized to my school's campus for the 5 hours I was working with it at home I only had 1 instance of major slow down and no disconnects. I'll just have to take this into account when I have to use my Ubuntu partition. Thanks again for all your help!