how to install firmware for wifi when lan is not working

Ioannis Vranos ioannis.vranos at
Fri Sep 16 13:51:36 UTC 2011

On Fri, Sep 16, 2011 at 12:42 PM, Abhishek Dixit <abhidixit87 at> wrote:
> I recently installed Ubuntu 11.04 on my laptop.
> Wireless is not working.
> I do not have a lan card working  so as to  connect to it and use.Any
> how I want to use the wifi so what do I need to install on it.
> I will need to download any thing in the windows OS only (my laptop is
> dual boot) and then install in Ubuntu.
> So how should I go on.
> lspci out put of my device is
> 0c:00.0 Network controller [0280]: Broadcom Corporation BCM4312
> 802.11b/g LP-PHY [14e4:4315] (rev 01)
>        Subsystem: Dell Wireless 1397 WLAN Mini-Card [1028:000c]
>        Flags: bus master, fast devsel, latency 0, IRQ 17
>        Memory at f69fc000 (64-bit, non-prefetchable) [size=16K]
>        Capabilities: <access denied>
>        Kernel driver in use: b43-pci-bridge
>        Kernel modules: ssb

Install package linux-firmware-nonfree.

Restart Ubuntu.

If wireless still not works, try activating it with your laptop's
keyboard function keys.

Let us know whether it works or not.

Ioannis Vranos

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