Wifi driver and network setting

**Nitin_Navneet** · September 29th, 2013

I am new user of Ubuntu and Linux
I have just installed ubuntu on Compaq 6710b laptop. I can't access Wifi.
Need to check whether wifi driver installed and working
How I can set up wifi. It was earlier working with Windows

**Bucky Ball** · September 29th, 2013

Thread moved to Networking & Wireless.

Welcome. Please open a terminal and copy/paste these commands, one at a time hitting return in between. Post the results back here between [code] tags.

Code:

iwconfig
sudo lshw -C network

**Nitin_Navneet** · September 29th, 2013

iwconfig response

lo no wireless extension
eth0 no wireless extensions

**Nitin_Navneet** · September 29th, 2013

lshw - C network

*-network UNCLAIMED
description: Network controller
product: BCM4311 802.11a/b/g
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:10:00.0
version: 02
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:e4100000-e4103fff
*-network
description: Ethernet interface
product: NetLink BCM5787M Gigabit Ethernet PCI Express
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:18:00.0
logical name: eth0
version: 02
serial: 00:1a:4b:88:e6:bd
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.128 firmware=sb v2.09 latency=0 link=no multicast=yes port=twisted pair
resources: irq:47 memory:e4000000-e400ffff

**Bucky Ball** · September 29th, 2013

Do an update with a cable plugged in (through update manager) then check 'Additional Drivers' for anything that says 'B43' in it.

The other option is to install (through Software Centre or Synaptics):

b43-fwcutter
b43-firmware-installer

Restart. Working? That card ( BCM4311 802.11a/b/g) should work out of the box.

**Hadaka** · September 29th, 2013

Hi, from a wired connection to the internet please do..

Code:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get remove --purge bcmwl-kernel-source
sudo apt-get install linux-firmware-nonfree 
sudo modprobe b43

dissconnect your wired connection, your
wrieless should be working.
thanks.

**Nitin_Navneet** · September 29th, 2013

I am not having plugged network.

I installed b43-fwcutter

using dpkg -i b43-fwcutter.

But how can I check if same got installed correctly.

When trying to install firmware-b43-installer, it is giving error
(Reading database ... 143118 files and directories currently installed.)
Preparing to replace firmware-b43-installer 1:015-9 (using firmware-b43-installer_015-9_all.deb) ...
Unpacking replacement firmware-b43-installer ...
Setting up firmware-b43-installer (1:015-9) ...
No chroot environment found. Starting normal installation
This card work with newer 5.10.56.27.3 firmware. Trying to install it.
--2013-09-30 02:08:21-- http://mirror2.openwrt.org/sources/b...mipsel.tar.bz2
Resolving mirror2.openwrt.org (mirror2.openwrt.org)... failed: Name or service not known.
wget: unable to resolve host address `mirror2.openwrt.org'
dpkg: error processing firmware-b43-installer (--install):
subprocess installed post-installation script returned error exit status 4
Errors were encountered while processing:
firmware-b43-installer

**Nitin_Navneet** · September 29th, 2013

b43-fwcutter -v

result

b43-fwcutter version 015

Does it mean fwcutter is properly installed?

If I am trying to install

sudo apt-get -i b43-fwcutter

I am getting similar error no Chroot environment found

Do I need to reinstall b43-fwcutter