I'm using the ASUS USB-N10 wireless adapter on my laptop. It has been behaving weird since I started using it. In the beginning, it just didn't work at all. The LED on it, that's supposed to glow, didn't glow. However, it worked perfectly fine on my friend's latptop that had the same version of Ubuntu. Also, it worked fine on the Windows partition of my laptop. So I did lsmod on my friend's laptop and tried to identify the wi-fi related modules that I didn't have and installed them on my computer. That's when it started working. However, once in a while, it would still refuse to turn on for no reason whatsoever. Till now, I kept ignoring this erratic behavior and just rebooted every time the adapter chose to not work. Rebooting always fixed the problem.
Today however, it stopped working completely. Rebooting didn't help. What should I do?