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've just installed Ubuntu on my Dell laptop, and the wireless is not working.

How could I fix it ? Is there any driver I should install?

Note: I'm also running windows 7 on the same laptop and the wireless connection works just fine.

Any suggestion would be helpful. Thanks!

EDIT : Wifi card model description : vendor : broadcom corporation product : BCM4312 802.11b/g LP -PHY version : 01 configuration : driver = b43 -pci-bridge latency=0

share|improve this question
Which Ubuntu version , which WiFi card model ? Is your wireless card detected by the system ? – astropanic Jan 11 '13 at 10:32
Ubuntu version is 12.10 , how could I check what is the Wifi card model and whether it's detected by the system or not ? Thanks ! – Itamar Jan 11 '13 at 10:46
ifconfig, iwconfig, lsusb, lspci - run each command via sudo and paste us the output – astropanic Jan 11 '13 at 10:59
"sudo rfkill -list all" might also help. – Aarti Elly Jan 11 '13 at 11:44

follow the below link

Here go to the section b43: No internet access follow the steps in this section. Note: b43 fwcutter is a must so without step 1 do not proceed to further steps.

Once done with all 4 steps goto the section switching between drivers: Herein remove (if existing) drivers. It might happen that some driver will not be there. for my case: after doing sudo modprobe -r wl I got error: FATAL: wl not loaded. So not to worry Then do loading them, by following the commands.

Once you are done please check: 1) sudo rfkill list all if it shows as below: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: yes

Hard blocked yes means there is hardware switch on your computer/laptop which has disabled the wifi. With this : Hardware swicth blocked can be seen under wireless icon. Now to turn it on read below: for my case: dell inspiron 1525, press Fn+Alt+F2 to turn on the wifi.


share|improve this answer

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.