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This question already has an answer here:

Wireless was worked perfectly in ubuntu 10.10. Now I upgraded it to ubuntu 11.04. After this upgrade wireless is not working in my laptop, even "wireless connection" is not showing in network connection list.

What I have to do for this?

lspci output:

06:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)

merged by Luis Alvarado Apr 19 '13 at 2:15

This question was merged with Installing Broadcom Wireless Drivers because it is an exact duplicate of that question.

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