I am facing a similar issue in my HP Ubuntu 16.04 laptop... WiFi icon is grayed out, it doesn't show the active connection (though it is actually connected to my WiFi router!) and it shows other Wi-Fi networks. Sometimes, the whole icon disappears and I get the small icon of network (with the up-down arrows)!
As reported by others, I suspect that it is caused due to laptop going to standby. The "service network-manager restart" command worked for me! Wish this bug could be fixed though! -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1585886 Title: WiFi indicator icon disappears in Ubuntu 16.04 Status in indicator-applet package in Ubuntu: Confirmed Status in network-manager package in Ubuntu: Confirmed Bug description: Dear all, Can someone confirm an occasionally missing WiFi indicator tray icon? Sometimes it happens that the icon is not displayed although the WiFi connection is working. Please see also the attached screenshot. Warmly, ~Robert To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/indicator-applet/+bug/1585886/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp