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Possible Duplicate:
How to Install Broadcom Wireless card (BCM43XX)

I recently installed Ubuntu 12.04.1 LTS using wubi.exe on my Dell Inspiron 1545 and I'm having some trouble getting my wireless to work properly. When I try to activate my Broadcom STA Wireless Driver, the installation fails. I am brand new to Ubuntu so I don't have much knowledge on how to fix this problem.

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marked as duplicate by Luis Alvarado, fossfreedom Nov 15 '12 at 19:24

This question was marked as an exact duplicate of an existing question.

try to install "linux-headers":

  1. Check what kernel version you are running:

    uname -r

  2. install the right headers (if your version if a -generic):

    sudo apt-get install linux-headers-generic

Easiest to accomplish by plugging an Ethernet cable. Otherwise download and do as stated there:

Here's a little more details: After upgrading to Ubuntu 12.04, my Broadcom STA Wireless driver is not working

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