After installing the latest version of Ubuntu 14.04, found that the wireless network card can not be used, test installation after the driver, the problem is resolved.
First determine the type of wireless card:
Lspci-vnn-d 14e4:
For example, my network card type is
04:00.0 Network Controller [0280]:broadcom Corporation BCM4312 802.11b/G lp-phy [14e4:4315]
According to the network card type 14e4:4315, compare this table to find the driver to be installed, here I need to install the WL kind of
Installation steps:
1. Install the B43-fwcutter tool first, as follows:
Download B43-fwcutter Source:
http://bues.ch/b43/fwcutter/b43-fwcutter-018.tar.bz2
After extracting, go to the directory and execute
Makesudo make Install
2. Installation drive
Download driver files:
HTTP://WWW.LWFINGER.COM/B43-FIRMWARE/BROADCOM-WL-5.100.138.TAR.BZ2 Installing the driver using the B43-fwcutter tool
sudo b43-fwcutter-w/lib/firmware broadcom-wl-5.100. 138/LINUX/WL_APSTA.O
3. Load Driver
Modprobe b43
Loading the driver may take a long time, please wait patiently.
For other types of wireless cards, refer to the URL:
Http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware
Ubuntu 14.04 Wireless Card driver installation