Hello, i recently removed the network-manager by console, I was trying to fix a problem. Now this widget don't show anymore, i installed the network-manager again, i create a new user and nothing. My SO is Linux mint kde 18.1. Please help me..... thank you....

Hi yoedusvany,
This is more a disto specific question.
My first guess for this issue is : have you checked if NetworkManager.service is enabled ?
try:

Code: Select all

systemctl ¦ grep NetworkManager

Otherwise, https://wiki.archlinux.org/index.php/NetworkManager certainly contains the solution of your problem.