I am new to Ubuntu and have a friend who encouraged me to try linux. I just got a Ubuntu Inspiron 1420 Laptop, and the ethernet internet connection doesn't work. I plugged it into a socket that I already tested with my main desktop. The really weird thing is that the ethernet was working at my friend's house.
I have a suspicion that the network might be rejecting the laptop, but I don't really know for sure. I would need to be able to confirm it is a network problem before maintenance at my apartment would do anything.
How do I check if it is the network that is rejecting my computer verses something wrong with the laptop? Also, what possible reasons could the network be rejecting a linux computer?