Re: prompted for wifi password on login screen
So it's still not automatically connecting, although editing my connection this time does actually seem to have a saved password value. Here are the contents of the three files:
$ cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
iface lo inet loopback
$ cat /etc/NetworkManager/NetworkManager.conf
$ cat /var/lib/NetworkManager/NetworkManager.state
If all else fails, use fire.