I'm using Lubuntu 14.4.01 on my netbook.
I input my wifi details in Network Connections, and I'm pretty sure I have everything right. But it doesn't even seem to try to connect!
sudo iwlist eth0 auth
eth0 no authentication information.
sudo iwlist eth1 auth
eth1 no authentication information.
EDIT: I will add that I can briefly see some kind of 'firmware warning' on startup. (EDIT 2: It goes too fast to read but I do see 'b43-phy0' as part of it.)