Comment 54 for bug 291062

Getting a very similar problem here in lucid - after suspend and resume the NetworkManager is disabled, if I enable it (by checking the 'enable networking' or by running 'dbus-send --print-reply --system --dest=org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager.wake' it starts working again. A sure way to replicate this would be to suspend and then remove the laptops power supply and battery to force a shutdown, then when starting back up NetworkManager will be disabled. Maybe NM sleep status should be reset during boot?