I'm using Ubuntu 14.04 on my laptop and I can't connect to a specific WiFi networks. I managed to connect to others wifi networks in the past without any problem, and other devices (another laptop with Windows 7 and some Android smarthphones) were also able to connect to this WiFi network. Furthermore, this laptop can connect to the same router through the ethernet cable. So, as a resume, the problem is just between this particular device and this particular WiFi network.
Any hint about what may be happening?
I already tried solutions proposed on these questions but it didn't worked:
It seems that I don't have the iwlwifi but the wl instead. I also tried following those steps but replacing "iwlwifi" with "wl" but nothing.