Ubuntu Network manager issues

I have recently refresh Ubuntu 16.04 on my Dell XPS 13. All is well… mostly. One recurring issue is that after restore from sleep, the network manager would (sometimes) show that I wasn’t connected to any wireless network and would appear that networking was disabled. But it was.

Restarting network-manager was not sufficient and the network manager applet would then simply dissapear.

As per this SO answer, killing and starting the applet fixed the issue.

sudo service network-manager restart
killall nm-applet; nohup nm-applet &