This temporary solution seems to work for me:
sudo systemctl restart network-manager.service
Got it from http://askubuntu.com/questions/761180/wifi-doesnt-work-after-suspend-after-16-04-upgrade
This temporary solution seems to work for me:
sudo systemctl restart network- manager. service
Got it from http:// askubuntu. com/questions/ 761180/ wifi-doesnt- work-after- suspend- after-16- 04-upgrade