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I've tried several solutions I found on the web, but didn't manage to solve a problem.

Since today my laptop won't find my WiFi network, but neighbours' networks are suggested. Another laptop with U12.04 does find one.

What do I do?

I've Dell Latitude-E4310,

02:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01)
    Subsystem: Dell Inspiron M5010 / XPS 8300
    Flags: bus master, fast devsel, latency 0, IRQ 17
    Memory at f2c00000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: brcmsmac
    Kernel modules: bcma, brcmsmac

also

NetworkManager Tool
State: connected (global)
- Device: eth1 -----------------------------------------------------------------
  Type:              802.11 WiFi
  Driver:            wl
  State:             disconnected
  Default:           no
  HW Address:        1C:65:9D:7A:45:5C
  Capabilities:

  Wireless Properties
    WEP Encryption:  yes
    WPA Encryption:  yes
    WPA2 Encryption: yes

Should I provide anything else? Many thanks in advance.

UPD: http://pastebin.com/NfzBK2HQ

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1  
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. [url]ubuntuforums.org/showpost.php?p=12350385[/url] –  Wild Man Oct 31 '13 at 22:12
    
@WildMan, done. pastebin.com/NfzBK2HQ –  Anton Nov 1 '13 at 6:00
    
These answers are too complicated. If Ubuntu is trying to usurp the tyrants these answers must be something the masses can understand. –  user254535 Mar 4 at 4:56

1 Answer 1

up vote 3 down vote accepted

Please do:

sudo apt-get purge bcmwl-kernel-source
sudo modprobe -rv wl
sudo modprobe -v brcmsmac

if there are any errors please continue with the commands then reboot. your wireless should be working now.

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It seemed to me I've tried doing this. Well. I must have done too many modifications in sequence (not quite understanding what I was doing) :) This worked. Awesome. You saved me, thank you! –  Anton Nov 1 '13 at 17:22
    
Make sure it works after a reboot, we may have to unblacklist a driver or two. –  Wild Man Nov 1 '13 at 17:29
    
Everything works perfectly. So a wrong driver was a problem? –  Anton Nov 2 '13 at 20:00
    
Yes it was the wrong driver. –  Wild Man Nov 2 '13 at 20:16
    
wow. thank you very much, man. this tip saved my life. –  androider Apr 8 at 3:31

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