how to install firmware for wifi when lan is not working

Abhishek Dixit abhidixit87 at
Sat Sep 17 07:18:42 UTC 2011

On Fri, Sep 16, 2011 at 11:27 PM, Robert Holtzman <holtzm at> wrote:
> On Fri, Sep 16, 2011 at 04:51:36PM +0300, Ioannis Vranos wrote:
>> 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.
> I'm confused (not unusual). How do you do this if there is no working
> wifi under ubuntu? Is the package on the cd? If so you should have
> mentioned this.
> --
No it is not on CD.Any thing that is important to make your wifi is by
default not present in the ISO which I downloaded.
So I rebooted the machine to Windows (I have a dual boot) wifi was
working in Windows so I went to the site and manually downloaded the
linux-firmware-nonfree package in windows then rebooted to Ubuntu and
the double clicked on the .deb file which then installed the concerned
While doing so I did not had any connectivity to internet from within
Ubuntu as only wireless network is available since I had windows so I
was able to reboot and download the non-free firmware for Ubuntu and
reboot then install in Ubuntu and then got wifi working.

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