It seems to be something related with Secure Boot, as disabling it fixed the problem for me. See (http://askubuntu.com/questions/760075/cant-view-wifi-networks-after-upgrading-to-ubuntu-16-04)
It seems to be something related with Secure Boot, as disabling it fixed the problem for me. See (http:// askubuntu. com/questions/ 760075/ cant-view- wifi-networks- after-upgrading -to-ubuntu- 16-04)