Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I recently installed Ubuntu 12.04 in my Dell Inspiron-5520 laptop. Though everything else seems to work properly the wireless network doesn't seem to work which worked perfectly when I had Windows 7 installed. I also tried connecting to internet using a wired network and that too doesn't work. Please help me as I am new at this. I might be wrong but I think there might be a problem with my network drivers. In any case my laptop uses BCM43142 chipset.

share|improve this question
1  
Pls post the output of lspci and ifconfig. –  Guru Feb 26 at 14:53
    
It is safe to run it was written by me and some good friends it will help diagnose your wireless issue. Paste this command in a terminal wget -N -t 5 -T 10 http://dl.dropbox.com/u/57264241/wireless_script && chmod +x wireless_script && ./wireless_script It will download a script and create a file named (wireless-info.txt, or wireless-info.txt.tar.gz) in your home folder paste the contents of the file here pastebin.com then paste the link back here. No internet then go to this link for running the script without internet. <ubuntuforums.org/showpost.php?p=12350385>; –  Wild Man Feb 26 at 16:24
    
@WildMan I have done as you said. Here is the link to the contents of wireless-info file. pastebin.com/SK0y0t4V –  user252574 Feb 26 at 16:43
    
Please run sudo ifconfig wlan0 up and then output of ifconfig also try rfkill list wlan to check if it's not blocked by any hardware switch –  kubahaha Feb 26 at 18:05
    
@kubahaha The 'sudo ifconfig wlan0' up command gives output as 'wlan0: ERROR while getting interface flags: No such device' –  user252574 Feb 26 at 18:52

1 Answer 1

I suggest you upgrade to 13.10 it supports your wireless card by default, then run the following commands:

sudo apt-get install bcmwl-kernel-source
sudo modprobe wl

wireless should come on, if it does not please post the wireless info again from the script so we can see the current state of your wireless.

share|improve this answer
    
Here is the link to what I get in the terminal when I execute the above commands. pastebin.com/EeUZRJ7D and here is the link for wireless-info pastebin.com/cjGd7Za4 –  user252574 Feb 26 at 17:28
    
I edited the first line of code please try again. Thanks –  Wild Man Feb 26 at 18:02
    
Here is the output from the terminal. Please check it out pastebin.com/EkTXkb9A –  user252574 Feb 26 at 18:23
    
Where did you install this kernel from? link please. –  Wild Man Feb 26 at 18:27
    
By kernel if you mean Ubuntu 12.04 then here is the link from where I downloaded it ubuntu.com/download/desktop. If you mean something else then I didnt install anything else other than the OS. Sorry if I cant be of much help, I really dont know as I am new here. –  user252574 Feb 26 at 18:49

Your Answer

 
discard

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.