wifi with WPA on Broadcom 43xx

based on this article (in Polish)

1. plug in your ethernet cable and be sure that you have connection to the internet

2. enable restricted driver for your wi-fi card

click APPLICATIONS > system > “Restricted Drivers Manager”

for “Firmware for Broadcom 43xx chipset family”
put the tick in “enabled” field

Close “Restricted Drivers Manager” and restart computer

3. uninstall network manager

sudo apt-get --purge remove network-manager

4. install wicd

sudo apt-get install wicd

5. edit /etc/network/interfaces

sudo mousepad /etc/network/interfaces

delete/comment (#) everything except:

auto lo

iface lo inet loopback

6. save and restart (just to be sure)

7. open WICD (under APPLICATIONS > internet) and configure your wifi connection