Ubuntu
network-manager package

  1. Bug #1568829
  2. Comment #2

Comment 2 for bug 1568829

Revision history for this message
Mathieu Trudel-Lapierre (cyphermox) wrote : Re: nm-applet icon not showing

The errors there look like the issue would be about NetworkManager not running. Are you sure it is started at the time? You wouldn't then have to restart nm-applet -- nm-applet does not show if it can't talk to NM.

Otherwise, I suppose there may be issues with policykit or some other authentication system:
(nm-applet:6250): nm-applet-WARNING **: GDBus.Error:org.freedesktop.NetworkManager.AgentManager.PermissionDenied: Unable to determine request sender and UID.

Neither PolicyKit or polkit-gnome have changed in a while. Could you please stop NetworkManager and restart it with debug logs? Steps below.

sudo systemctl stop NetworkManager
sudo /usr/sbin/NetworkManager --debug > ~/nm-debug.log

Then attach nm-debug.log; I expect it will show some hint as to the authentication issue somewhere near the top of the log.