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I've just installed Ubuntu 12.10 on my Lenovo laptop and the wifi signal reception changed completely.

I had Windows installed on it first and it had no problem connecting to my home network from my bedroom (to a router in another room). Now it only finds the network if I step outside the room.

An other computer in my room and my smartphone find the network and connect without any difficulties.

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You can try this: or better From what I have seen I would go first with the Youtube video.

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Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference. – gertvdijk Jul 17 '13 at 14:12

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