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I just performed a fresh install of Ubuntu 12.04.3 64-bit, and I cannot connect to the internet.

Ubuntu is installed on its own partition, with Windows 7 on the other. Yet while I'm able to connect to the internet using Windows 7, I am unable to do so using Ubuntu.

I use a Linksys Wireless-G USB network adapter dongle (WUSB54GC). It shows that I am successfully connecting to my router over wi-fi.

I had successful internet connection when I was using the 32-bit version of Ubuntu 12.04.3.

Can you help?

Thank you.


nicholas@Nicholas:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 20:cf:30:3f:fd:93  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback  
          inet addr:  Mask:
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:60 errors:0 dropped:0 overruns:0 frame:0
          TX packets:60 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:3808 (3.8 KB)  TX bytes:3808 (3.8 KB)

wlan0     Link encap:Ethernet  HWaddr 00:22:6b:9e:38:92  
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::222:6bff:fe9e:3892/64 Scope:Link
          RX packets:145 errors:0 dropped:0 overruns:0 frame:0
          TX packets:127 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:23530 (23.5 KB)  TX bytes:17789 (17.7 KB)
share|improve this question
are you able to connect but cant use internet?? – Sushantp606 Dec 2 '13 at 11:21
Correct. Connecting to my router, but no internet. – sunnybubblegum Dec 2 '13 at 11:35
check it .. and try… – Sushantp606 Dec 2 '13 at 13:48
Please see my ifconfig output under 'EDIT 1'. I will try some of the commands given in the link you provided. – sunnybubblegum Dec 2 '13 at 13:59
try "sudo dhclient wlan0"... – Sushantp606 Dec 2 '13 at 14:05
up vote 0 down vote accepted

try these lines once -

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

answer taken from here.

If error comes ignore them and reboot your PC then see if its working.

hope it will work now.

share|improve this answer
Hi, thank you for your response. However, I tried the commands and have not had successful internet connection. 1st: Reading package lists... Done, Building dependency tree, Reading state information... Done, E: Unable to locate package bcmwl-kernel-source, 2nd: FATAL: Module wl not found., 3rd: <none> – sunnybubblegum Dec 2 '13 at 13:31
paste the output of ifconfig. i am close to the problem. – Sushantp606 Dec 2 '13 at 13:39
Thank you!!! Note: Did not work after first reboot, but after rebooting a second time my internet started working. – sunnybubblegum Dec 2 '13 at 14:26

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