Network-manager becomes "unmanaged" if battery runs out during suspend

[Juhamatti Niemelä]

Binary package hint: network-manager

Release: Ubuntu 10.04 LTS
Hardware: Asus EeePC 900
Network-manager 0.6.6-3

If laptop battery runs out during suspend, network-manager is unable to connect any network after reboot. Clicking KNetworkManager icon shows tooltip "Network-manager is in unmanaged state".

Steps to reproduce:

1. Suspend
2. Let the battery run out
3. Boot
--> Network-manager not working
4. Reboot
--> Still not working

Work around:

1. Suspend again
2. Resume

I guess that network-manager won't get resumed properly because of the empty battery and for some reason it is left to that state even after multiple reboots. However suspending and resuming again fixes this.

[Mathieu Laurent (mla)]

Same problem... Battery run out...

No more network. Only lo interface...

Suspending and resuming again fixed my problem.

[itchy8me (itchy8me)]

same problem on the desktop with an unsuccessful suspend and then reset (kubuntu 10.04). re-suspending re-enabled the network.

[Pedro Miguel Baptista Machado (pedrmachado)]

in the terminal type "sudo edit /etc/NetworkManager/nm-system-settings.conf" change the "managed=false" to "managed=true" and then save it.
then in the terminal type "killall nm-system-settings"
and then reboot......