[ubuntu] Ubuntu Server wont acknowledge my RJ45

view full story

http://ubuntuforums.org – Hi forum! My problem is that I recently upgraded my hardware for my Ubuntu Server (10.04.1 ver.) with a new motherboard ++ Then I plugged in RJ45 the at the very same location. But no blinking light from the RJ45 interface, and no connection with router.. The cable must be broken. So I tried the cable with my school laptop (linux Mint newes ver.) .. and it worked! I got connected to the Internet. I've also tried my Windows 7 computer... cable worked as well. I then tried to change the RJ45 cable and plug it in Ubuntu server... Then I got blinking and connection with the router. I tried wit (HowTos)