lenovo@lenovo-B575e ~ $ inxi -N
Network:   Card-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169
           Card-2: Broadcom BCM4313 802.11bgn Wireless Network Adapter
           driver: wl


sudo -i

apt-get update

apt-get install module-assistant wireless-tools

echo blacklist brcm80211 >> /etc/modprobe.d/broadcom-sta-common.conf

update-initramfs -u -k $(uname -r)

modprobe -r b44 b43 b43legacy ssb brcm80211

modprobe wl

exit 

reboot