I installed Linux mint 17 on my PC a month back. I did not have any issues of WiFi until 2-3 days back.
2-3 days back I updated few packages through the update manager and since then the WiFi is not getting connected. It shows that my router is available for connection but does not provide any option to connect to the router. And sometimes it gets switched to Airplane mode.
I have both Windows and Linux Mint on my PC. The WiFi gets connected in Windows but not in Mint.