Setup wifi for broadcom(14e4:4365).
First check whether you have broadcom(14e4:4365) chip or not by :-
lspci -vnn | grep 14e4
you should get the output something like
07:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Now type these and you are done
sudo dpkg-reconfigure network-manager
sudo apt-get install bcmwl-kernel-source
sudo apt-get install firmware-b43-installer
