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My network connections stopped working, I am unable to connect through a wireless connection, or through a wired one.

On the top bar, on network tab I get this message: No network devices available

And on System settings -> Betwork, If I click on options nothing happens, I only can create a new VPN network.

This is the result of lspci

I have to mention that it worked fee days ago.
I have a Dell inspiron N5110 and I am using Ubuntu 12.10.

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