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Recently I installed Ubuntu 12.10 alongside Windows in a separate partition with ext3 file format.

Everything worked fine when I installed 12.10 at first. But after I updated the packages (which was around 70mb), my Wifi connections aren't shown. I can see bluetooth working fine, but I cannot see any active Wireless connections (i have checked the "Enable networking" also).

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Please run the terminal command: lspci -nn. Please edit your question to add the details of your wireless card. –  chili555 Nov 10 '12 at 15:11
    
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 Nov 10 '12 at 17:08
    
Have you tried turning it on from the terminal? sudo ifconfig wlan0 up –  tapan Nov 10 '12 at 18:14

1 Answer 1

I had a similar problem, it was resolved by following the steps here

http://www.upubuntu.com/2012/10/how-to-fix-unity-and-wireless-problems.html

WiFi Stops Working After Upgrading To Ubuntu 12.10 (Broadcom Wireless cards)

You can fix wifi problems using two methods:

  • Either connect to the internet via wired connection and run this command:

    sudo apt-get update && sudo apt-get upgrade

Then reboot your system.

  • Or use the following commands:

    sudo apt-get install linux linux-headers-generic kernel-package

    sudo apt-get install --reinstall bcmwl* firmware-b43-lpphy-installer b43-fwcutter

Finally, reboot your system.

If that didn't help, try these commands:

sudo apt-get remove bcmwl-kernel-source

sudo apt-get install firmware-b43-installer b43-fwcutter

sudo reboot
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Thanks David! Would really appreciate that! –  Ravi Nov 24 '12 at 1:30
    
Worked for me too –  Oussama Dec 28 '12 at 14:05
    
This worked for me on a standalone install of 12.10. –  jimirings Mar 24 '13 at 14:59

protected by Community Jan 17 '13 at 22:38

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