I just bought an Archer T6E wlan card and originally tried to install to Windows 7. I could see the networks but couldn't connect. I've restarted the router/ modem. I am now having the same problem using Ubuntu. I have looked for additional drivers but nothing has worked. My card is recognized and the wired LAN connection does work.
wireless info - http://paste.ubuntu.com/16901483/
wireless info while attempting to connect to network - http://paste.ubuntu.com/17006308/