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Possible Duplicate:
How do I install BCM43142 wireless drivers for Dell Vostro 3460/3560?

I just bought new Dell Vostro 3560 with Ubuntu 11.10 and when I upgareded it to 12.04 LTS I lost my wifi card. System doesnt see my wifi cards so im not able to install any drivers, etc.

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michal palacz
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  • Have you checked the wireless hardware switch? – Mitch Jul 02 '12 at 14:45
  • Welcome to Ask Ubuntu! We need more hardware information to help you, can you look at [this question](http://askubuntu.com/questions/14008/i-have-a-hardware-detection-problem-what-logs-do-i-need-to-look-into) and then edit your question adding the information. – Jorge Castro Jul 08 '12 at 22:09
  • The same problem. WIFI doesn't work on 12.04, but worked on 11.10 that came preinstalled. I switched to Win7 because of it :( – Zelid Aug 12 '12 at 08:23

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In terminal run

lspci |grep Network

If output is similar to this:

Network controller: Broadcom Corporatrion Device 4365 (rev 01)

or another Broadcom chipset 43xx series, follow this solution:

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Yaroslav Tsymbalyuk
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