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I have Ubuntu 10.04 on my DELL-LAPTOP. I am new to linux.

I am not able to connect with the wired ethernet connection (it connects on Windows XP on the same machine). It was working fine before but cannot connect now.

How do I figure out where the problem is?

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post 'ifconfig -a' from a terminal window – emgee Apr 15 '11 at 21:12

Try opening a terminal window and enter the following:

sudo ifup -a try and bring up all network interfaces or...

sudo ifconfig eth0 up bring up just the first ethernet adapter.

Most of the time the first wired interface under linux is named eth0. This should tell eth0 to start running and, depending upon configuration, use DHCP to get an address. Alternatively, you could enter:

sudo ifconfig eth0 netmask broadcast
sudo ifconfig eth0 up set a static IP address of (replace as necessary for your network). If none of these work, you may be lacking a linux driver for your particular NIC.

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