[ubuntu] wired connection not working

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http://ubuntuforums.org – Hello everyone, I have recently installed ubuntu 10.04 LTS on a gateway netbook lt303u. My wireless works perfectly, but for some reason, connecting directly to the ethernet port does not (it doesn't even light up when connected to the laptop). I have tested the cable on another computer to confirm the internet is working. I have checked that my MAC address is allowed on the network. I tried disconnecting from all wireless networks. Here is the output from lspci -v relevant to ethernet and wireless. 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express F (HowTos)