Broadcom driver is working fine when ubuntu 14.10 is not yet installed on my system. But when I installed it alongside with Windows 7(Dual Boot) it says that "This device is not working"(Broadcom). I cant connect WIFI in ubuntu but it does in Windows 7. I search solutions in windows 7, i boot ubuntu, and it doesn't work. I boot windows again, boot ubuntu again. Thats what im doing every-time but i can't fixed it. Help me lease. Thanks :)

02:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)

  • Please edit your question to add details of your wireless device from the terminal: lspci -nn | grep 0280 Welcome to askubuntu! – chili555 Jan 29 '15 at 2:32
  • 02:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01) – Dayan Zanchi Jan 30 '15 at 1:26

Please obtain a temporary internet connection, open a terminal and do:

sudo apt-get update
sudo apt-get purge bcmwl-kernel-source
sudo apt-get install firmware-b43-installer

Reboot and your wireless should be working.

'Additional Drivers' is incorrect for your 14e4:4315 device.

If you have no internet capability, then do the purge step and then download this on some other computer: https://www.dropbox.com/s/7exlzch25ap6uha/b43.zip?dl=0 Transfer it on a USB or similar to your Ubuntu computer and drop it on your desktop. Right-click it and select 'Extract Here.' Now, in the terminal:

sudo mkdir /lib/firmware/b43
sudo cp ~/Desktop/b43/*  /lib/firmware/b43


  • Temporary connection? It means i'll do the coding everytime I boot ubuntu? – Dayan Zanchi Jan 30 '15 at 1:49
  • Ah. you mean i need temporary connection to make the code work? – Dayan Zanchi Jan 30 '15 at 1:52
  • It only needs to be run once. – chili555 Jan 30 '15 at 2:04
  • I don't have another internet connection. All I have is wifi. Can't I do it offline? – Dayan Zanchi Jan 30 '15 at 2:06
  • I will edit my answer above in a few moments. – chili555 Jan 30 '15 at 2:14

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