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How do I enable wifi with Ubuntu 12.04 on my Dell Vostro 1400 . Yesterday I tried some commands as you have suggested previously to other users . but today i am facing the same problem. Wireless networking is not highlighted. output of lspci -nnk | grep -iA2 net; rfkill list all is

09:00.0 Ethernet controller [0200]: Broadcom Corporation NetLink BCM5906M Fast Ethernet PCI Express [14e4:1713] (rev 02)
    Subsystem: Dell Device [1028:0227]
    Kernel driver in use: tg3
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0c:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
    Subsystem: Dell Wireless 1395 WLAN Mini-Card [1028:000b]
    Kernel driver in use: b43-pci-bridge
0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
2: phy1: Wireless LAN
    Soft blocked: no
    Hard blocked: no

What should I do?

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  • Please add some more information about the problem you are facing?
    – Mudit Kapil
    Mar 21, 2015 at 14:07
  • I have reinstall ubuntu 12.04. Now I can use LAN without any problem.
    – Naveen Kumar
    Mar 21, 2015 at 14:10
  • Can you add the result of lspci -nnk | grep -iA2 net; rfkill list all to your question
    – Jeremy31
    Mar 21, 2015 at 14:11
  • I don't know the main issue ... may be drivers need to be install.. # When i checked about the network Only LAN is highlighted. but wireless network button is not highlighted. I have already click the button enable wireless. but no idea more to ---- how to install wifi drivers.
    – Naveen Kumar
    Mar 21, 2015 at 14:13
  • the result of the above command is
    – Naveen Kumar
    Mar 21, 2015 at 14:14

1 Answer 1

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sudo apt-get install firmware-b43-lpphy-installer and reboot should fix it unless the firmware-b43-lpphy-installer package is no longer available then sudo apt-get install firmware-b43-installer and reboot

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