my Dell inspiron 1420 running Ubuntu 11.10 [as of today] cannot detect any wireless networks [and I know there are some in range]. Perhaps a problem with the proprietary driver? How should I go about fixing this? I really have no idea=am linux illiterate
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Welcome to Ask Ubuntu! We need more hardware information to help you, can you look at this question and then edit your question adding the information. – Jorge Castro Mar 24 '12 at 01:08
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Can you try this and then edit your question with what happens? http://askubuntu.com/questions/47506/how-do-i-install-a-graphics-or-wireless-card-driver – Jorge Castro Mar 24 '12 at 01:09
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Ubuntu has a program called "Restircted Drivers". If you have a Broadcom Wireless card (many Dell notebooks have Broadcom), you can found the needed drivers there. You only have to activate it; Ubuntu will download it and install it.
Try this possible fix. Sorry for my poor english.

lesco
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Maybe this post would be helpful.
http://blog.tech4him.com/2011/09/broadcom-wireless-on-ubuntu-11-04-and-11-10/
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2Whilst 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. – Eliah Kagan Jul 20 '12 at 21:44