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I upgraded ubuntu to 12.04 on my MSI U100 Plus netbook and found that the wifi icon is missing and I have no internet connection. However, if I plug in the ethernet cable and reboot, then the computer connects to wireless too (and the wifi icon appears), and this connection persists after I remove the ethernet cable.

Now, my question is: how explain to 12.04 that it should connect wireless without a trick with the cable?

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Another issue I had seemed very much related; "Waiting for full network configuration" followed by "waiting 60 more seconds ..." during every boot. When I followed the advice from bug #916890 to comment out this line in /etc/network/interfaces:

iface eth0 inet dhcp

both problems were resolved.

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