I found that this message generated because I manually disabled the modemmanager Upstart service, which isn't a bug since NetworkManager needs it anyway.
The motivation of disabling this service is that it's starts no matter if there's modem connected and it abnormally generates redundant "restart" messages during system shutdown, if anyone have concern of this issue please file a new bug.
I found that this message generated because I manually disabled the modemmanager Upstart service, which isn't a bug since NetworkManager needs it anyway.
The motivation of disabling this service is that it's starts no matter if there's modem connected and it abnormally generates redundant "restart" messages during system shutdown, if anyone have concern of this issue please file a new bug.