The Mint 17.1 Rebecca loses Wi-Fi 802.11n, WPA2-PSK.
The Wi-Fi sometimes works, sometimes not, and it is not possible to restart.
In the same laptop, under MS Windows the Wi-Fi works perfectly.
I can not understand this, because I used Linux Mint 13 for two years and never ever was any problem with the Wi-Fi.
Maybe installing an Ubuntu Linux distribution could help...