I have installed Ubuntu 14.04 along with Windows 8.1. My Wifi is working in windows but not in Ubuntu. I gave the following command in the command terminal.
nmcli nm RUNNING STATE WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN running connected enabled enabled enabled enabled lspci -knn | grep Net -A2 03:00.0 Network controller : Qualcomm Atheros Device [168c:0042] (rev 30) Subsystem: Lite-On Communications Inc Device [11ad:0806]
Though it says wifi is enabled, yet it's not working. I have an Acer Aspire E5-573 laptop.