I have Ubuntu 12.04 LTS installed through Wubi on a Windows 7 machine, and I use a wired internet connection through a router.
Every time I load Ubuntu, I have to go through the command line to re-establish my connection. I use,
sudo ifconfig eth0 up and then
sudo dhclient etho.
I have DHCP set up on my router and have no issues while in Windows.
I've tried editing the connection using the manual option and that doesn't work at all.
While typing those few commands works, I'd like to find a way to get it to connect automatically.
I'm new to Ubuntu and am not quite sure what info you may need, so please ask.