Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am using Dell Vostro 3400 PC. Previously I was running Ubuntu 11.10 version . Recenty I have upgraded it to 12.04 version. The sad part is wireless is disabled now and I am unable to connect internet.

How to enable wireless?

share|improve this question
Please execute followings in terminal and post output of lspci and rfkill list – Web-E May 11 '12 at 7:00
Have you connected (temporarily) by Ethernet, run updates and searched for additional drivers? If so, then we need more details (as above). – david6 May 11 '12 at 8:00

Actually I followed 2 step to enable wireless in my PC

  • Step 1 : Removed the bcmwl-kernel-source package

    sudo apt-get remove bcmwl-kernel-source
  • Step 2 : Installed the firmware-b43-installer package.

    sudo apt-get install firmware-b43-installer

And then rebooted my PC .

Finally got my work done. :)

share|improve this answer
Thanx @Jorge... – Sam May 11 '12 at 19:47

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.