First, for install broadcom wireless linux ubuntu, use LAN cable for getting internet access.
Second, open your terminal and type the following this command
sudo apt-get purge bcmwl-kernel-sourceThird, to install broadcom wireless linux ubuntu, type this command
sudo apt-get install bcmwl-kernel-sourceRemove the module before
sudo modprobe -r b43 ssb wlAfter it, you can enable the module. I recommend using wl module, and than type this command
sudo modprobe wlAnd than restart you PC. If this way are not working, you can following this tutorial in http://paperforshare.blogspot.com/2014/05/install-broadcom-bcm4311-wireless-on.html
Source : here
Paper 4Share - [SOLVED] How to Install Broadcom Wireless Linux Ubuntu