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Description of problem: It seems to me that something is not working correctly corresponding with systemd and the NetworkManager. The command `sudo systemctl stop NetworkManager.service` correctly stops the network manager. however after about 5 minutes the network manager is restarted. How reproducible: running the commands below stops the network manager and looks every 10 seconds for processes that contain the name network sudo systemctl stop NetworkManager.service watch -n10 bash -c "ps ax |grep -i network" Actual results: After less than 10 minutes the NetworkManager suddenly resurrects and manages connections again. Expected results: If a component is manually (forced) to stop, the service shall not be restarted. This basically stops wpa_supplicant from working. Additional info:
NetworkManager is a D-Bus service and many other programs communicate with it via D-Bus API. Even if direct D-Bus auto-activation is disabled by 'Exec=/bin/false' in /usr/share/dbus-1/system-services/org.freedesktop.NetworkManager.service, there are some other activation triggers, here systemd. It is asked by D-Bus to activate NetworkManager due to a program's interaction with NM (in my test it was packagekitd). I think the recommended way is not only to 'stop' but rather 'disable' NetworkManager.service: http://0pointer.de/blog/projects/three-levels-of-off Logs from dbus-monitor after 'systemctl stop NetworkManager.service': --------------------------------------------------------------------- method call sender=:1.311 -> dest=org.freedesktop.DBus serial=1 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=Hello method call sender=:1.311 -> dest=org.freedesktop.DBus serial=2 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch string "type='signal',sender='org.freedesktop.NetworkManager',path='/org/freedesktop/NetworkManager',interface='org.freedesktop.DBus.Properties'" method call sender=:1.311 -> dest=org.freedesktop.DBus serial=3 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch string "type='signal',sender='org.freedesktop.DBus',path='/org/freedesktop/DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.freedesktop.NetworkManager'" method call sender=:1.311 -> dest=org.freedesktop.DBus serial=5 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch string "type='signal',sender='org.freedesktop.NetworkManager',path='/org/freedesktop/NetworkManager',interface='org.freedesktop.NetworkManager'" method call sender=:1.311 -> dest=org.freedesktop.DBus serial=6 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch string "type='signal',sender='org.freedesktop.DBus',path='/org/freedesktop/DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.freedesktop.NetworkManager'" signal sender=org.freedesktop.DBus -> dest=org.freedesktop.systemd1 serial=7 path=/org/freedesktop/DBus; interface=org.freedesktop.systemd1.Activator; member=ActivationRequest string "dbus-org.freedesktop.NetworkManager.service" Logs from dbus-monitor after 'systemctl disable NetworkManager.service': --------------------------------------------------------------------- method call sender=:1.347 -> dest=org.freedesktop.DBus serial=1 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=Hello method call sender=:1.347 -> dest=org.freedesktop.DBus serial=2 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch string "type='signal',sender='org.freedesktop.NetworkManager',path='/org/freedesktop/NetworkManager',interface='org.freedesktop.DBus.Properties'" method call sender=:1.347 -> dest=org.freedesktop.DBus serial=3 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch string "type='signal',sender='org.freedesktop.DBus',path='/org/freedesktop/DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.freedesktop.NetworkManager'" method call sender=:1.347 -> dest=org.freedesktop.DBus serial=5 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch string "type='signal',sender='org.freedesktop.NetworkManager',path='/org/freedesktop/NetworkManager',interface='org.freedesktop.NetworkManager'" method call sender=:1.347 -> dest=org.freedesktop.DBus serial=6 path=/org/freedesktop/DBus; interface=org.freedesktop.DBus; member=AddMatch string "type='signal',sender='org.freedesktop.DBus',path='/org/freedesktop/DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',arg0='org.freedesktop.NetworkManager'" signal sender=org.freedesktop.DBus -> dest=org.freedesktop.systemd1 serial=7 path=/org/freedesktop/DBus; interface=org.freedesktop.systemd1.Activator; member=ActivationRequest string "dbus-org.freedesktop.NetworkManager.service" signal sender=:1.1 -> dest=org.freedesktop.DBus serial=4562 path=/org/freedesktop/systemd1; interface=org.freedesktop.systemd1.Activator; member=ActivationFailure string "dbus-org.freedesktop.NetworkManager.service" string "org.freedesktop.systemd1.LoadFailed" string "Unit dbus-org.freedesktop.NetworkManager.service failed to load: No such file or directory. See system logs and 'systemctl status dbus-org.freedesktop.NetworkManager.service' for details."
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