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I install ubuntu 14.04 on my old laptop but wifi doesn't work and when i use fn+f2 keys for wifi nothing change. sometime when i boot xp and use wifi and boot ubuntu again wifi led still run but wifi doesnt work.

I can connect to net with ethernet cable I try some instruction in some site but nothing change like:

 sudo apt-get remove --purge bcmwl-kernel-source
 sudo apt-get install linux-firmware-nonfree

please help me sorry for my bad english.

lspci -knn | grep Net -A2
05:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g   WLAN [14e4:4311] (rev 01)
Subsystem: Dell Wireless 1390 WLAN Mini-Card [1028:0007]
Kernel driver in use: b43-pci-bridge

marked as duplicate by Pilot6, Eric Carvalho, Community Aug 17 '15 at 13:38

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  • Please edit your question and add output of lspci -knn | grep Net -A2 terminal command. – Pilot6 Aug 14 '15 at 17:10
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You need to install firmware. Run in terminal

sudo apt-get install firmware-b43-installer
  • when i use this and reboot nothing change but when i boot xp and then reboot ubuntu its work very good thanks a lot! – E Coder Aug 14 '15 at 18:50
  • You need to do it when connected to internet. – Pilot6 Aug 14 '15 at 18:51

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