I have a Dell Inspiron 15 3543 with Ubuntu 15.04 as dual boot but wi-fi doesn't work and it doesn't detect the mobile broadband

I bought a dell inspiron 15 3543. i installed Ubuntu 15.04 as second boot option , but it does not detect any wi-fi signal. Also it does not detect the mobile broadband when i plug it in the usb drive.I could not find any wi-fi driver or package for this model

1 Answer

Connect to internet by wire and run

sudo apt-get update
sudo apt-get install bcmwl-kernel-source