I found this: http://forum.pinguyos.com/Thread-Wireless-not-working-with-TL-W722N
Which seems to be the exact problem I'm having. This is my kernel version: $ uname -aLinux nsu-gnu 3.2.0-52-generic #0trisquel1 SMP Fri Aug 23 00:17:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
