Re: NetworkManager not starting ppp connection.

[Aleksander Morgado <aleksander aleksander es>]

On Sat, Sep 3, 2016 at 9:56 PM, A. F. Cano <afc shibaya lonestar org> wrote:
> Sep  2 21:02:58 fbx NetworkManager[1317]: <info>  [1472864578.5172] manager: (ttyACM0): new Broadband 
> device (/org/freedesktop/NetworkManager/Devices/26)
> Sep  2 21:02:58 fbx NetworkManager[1317]: <info>  [1472864578.5180] device (ttyACM0): state change: 
> unmanaged -> unavailable (reason 'managed') [10 20 2]
>
> I think this is the problem.  NetworkManager thinks the ppp connection is
> managed, but there is nothing in /etc/network/interfaces or
> /etc/network/interfaces.d/setup but lo.
>
> Sep  2 21:02:58 fbx NetworkManager[1317]: <info>  [1472864578.5189] device (ttyACM0): modem state 'enabling'
>
> This is puzzling.  If NetworkManager has determined that the device is
> managed and therefore unavailable, why is it 'enabling' it?
>
> Sep  2 21:02:58 fbx NetworkManager[1317]: <warn>  [1472864578.5193] (ttyACM0): failed to retrieve SIM 
> object: No SIM object available
>
> This is no surprise.  It's a cdma phone, but then it's only a warning.
>
> Sep  2 21:02:58 fbx NetworkManager[1317]: <info>  [1472864578.5204] device (ttyACM0): state change: 
> unavailable -> disconnected (reason 'none') [20 30 0]
>
> Mmm...  First, NetworkManager claims it's unavailable and now it's
> disconnected for no reason (?)

Looks like ModemManager is managing this device for NetworkManager;
and MM debug logs would help to see if there's any issue detecting the
device. See
https://www.freedesktop.org/wiki/Software/ModemManager/Debugging/

Also, did you actually try to create a new connection profile in
NetworkManager for the device and activate it?

-- 
Aleksander
https://aleksander.es