Personal Encounters

Enable Wifi in Dell Vostro 14 3000 Series with Ubuntu 14.04 LTS

Ubuntu 14.04LTS is the latest LTS release available. I had Ubuntu 12.04LTS installed in my Dell Vostro. There is no option available for immediate upgrade to ubuntu 14.04LTS from 12.04LTS. Hence I decided to format and install fresh.

There has always been considerable improvement in every new release of Ubuntu, but network connectivity has always been an obstacle while using Ubuntu releases.

Below are the steps to enable the WIFI drivers.

1. Check if valid WIFI adapter is available:

$ sudo lshw -C network
       description: Wireless interface
       product: BCM43142 802.11b/g/n
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:06:00.0
       logical name: wlan0
       version: 01
       serial: 9c:d2:1e:e5:47:3f
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion= (r415941) latency=0 multicast=yes wireless=IEEE 802.11abg
       resources: irq:18 memory:f7900000-f7907fff
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: eth0
       version: 0c
       serial: b8:2a:72:ac:31:fa
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 ip= latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:58 ioport:e000(size=256) memory:f7800000-f7800fff memory:f2100000-f2103fff

2. Check if WIFI is enabled:

wlan0     IEEE 802.11abg  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
vboxnet0  no wireless extensions.

lo        no wireless extensions.

eth0      no wireless extensions.


Identify your Brodcom chipset family:

$ lspci -vvnn | grep 14e4
06:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)

4. Install STA Drivers

sudo apt-get update
sudo apt-get install bcmwl-kernel-source

Now reboot the system to see your WIFI enabled.

For it to be effective without reboot run the below commands:

sudo modprobe -r b43 ssb wl
sudo modprobe wl

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