When I looked up your model it can come with wifi cards from intel, broadcom...

When I looked up your model it can come with wifi cards from intel, broadcom or intel, so the details without clarification are too vague to accurately assist.

In addition we do not know which Linux based distro you are using, that is important because each distro has their own installation procedures and available packages.

My guess is that the computer is using a broadcom wifi card (most likely b43) and running ubuntu, You will need to confirm the information before we can assist further.

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