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I have a Toshiba Satellite L55 laptop which has Qualcomm Atheros AR8161 network interface card. I took help from the following link: How do I install drivers for the Atheros AR8161 Ethernet controller?

But my problem is that I am unable to connect to internet either through wired or wireless connection. Then how should I proceed further?

Thanks in advance.

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While connected to wire try to execute this command sudo dhclient eth0 if still not work then try this: sudo ifup eth0 reply the result of both commands.. –  Saurav Kumar Sep 6 '13 at 6:51
Enabling the ethernet without a connection is very difficult but manageable. Enabling the wireless may, in fact be easier, making the ethernet easy. Is wireless available if we get it going? Please edit your question to add details of your devices from the terminal command: lspci -nn | grep -e 0200 -e 0280 There is quite a good chance that your ethernet will work in Ubuntu 13.04. –  chili555 Sep 6 '13 at 13:33
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