I am using Ubuntu 12.04 on my Dell Inspiron 1545 and I can successfully connect to the Internet using an Ethernet cable but not when I try and connect through the wifi.

Any help would be appreciated.

My Wireless Card Details:-

Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)

  • 1
    Please edit your question to add details of your wireless card from the terminal command: lspci -nn | grep 0280
    – chili555
    Aug 25, 2013 at 16:02
  • Check this askubuntu.com/questions/141834/…
    – user187181
    Aug 25, 2013 at 16:02

1 Answer 1


Please obtain a working ethernet connection, open a terminal and do:

sudo apt-get install firmware-b43-lpphy-installer

After it completes, detach the ethernet and do:

sudo modprobe -r b43 && sudo modprobe b43

Your wireless should be working. In a few cases, it takes a reboot.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

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