I can confirm this behavior on a fresh install of 16.04 on the Dell XPS 13 developer edition. I get the same error message when trying to setup a wireless connection in lightdm. I don't whether this connected or not but the hotkeys (volume up/down, screen brightness) also don't work in lightdm. I installed kernel 4.6 because of the wireless toggle not working in 4.4. That solved the wireless toggle but did not change the issue in lightdm.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1574020 Title: Can't use networkmanager from lightdm Status in network-manager package in Ubuntu: Confirmed Bug description: After upgrading to 16.04 desktop (unity) (clean install) from 14.04, (so not really upgrading, but you get the point) I noticed that lightdm with unity-greeter (all stock, nothing changed) can't connect to WiFi with network-manager. WiFi works after loggin it, but it should be working before also, if not, what's the point in having an icon there :) I get the following message: Failed to add/activate connection. - (1) Insufficient privileges. - see image. This worked fine in 14.04. I have noticed this problem in both my desktop (Broadcom WiFi) and Laptop (Intel WiFi) - So it has nothing to be with the chip. Feel free to ask for more info. Edit: From syslog: Apr 23 16:50:46 desktop NetworkManager[979]: nm_settings_connection_delete: assertion 'NM_IS_SETTINGS_CONNECTION (self)' failed Apr 23 16:50:46 desktop NetworkManager[979]: <info> [1461423046.1662] audit: op="connection-add-activate" pid=1275 uid=108 result="fail" reason="Insufficient privileges." Apr 23 16:50:46 desktop NetworkManager[979]: (NetworkManager:979): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1574020/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
