Re: nmcli and cdc-wdm0 device for UMTS connection

[Giovanni Parodi via networkmanager-list]

First, thank you for your help.
I entered the ifname cdc-wdm0 because of the tutorial that I found at the
following link:
https://docs.ubuntu.com/core/en/stacks/network/network-manager/docs/configure-cellular-connections

They say:
 is the string listed as “primary port” in the output from 'sudo
mmcli -m ' (as previously described)

The modem primary port in mmcli -L is
cdc-wdm0

However I tried entering the following command:
nmcli c add type gsm ifname "*" con-name remoteConnection apn ibox.tim.it

and once again the reply to command
nmcli con up remoteConnection

is:
Error: Connection activation failed: No suitable device found for this
connection

Did I understand your suggestion to use a * as ifname?
Thank you
Giovanni

Il giorno mar 18 set 2018 alle ore 14:51 Thomas Haller 
ha scritto:

> On Tue, 2018-09-18 at 14:02 +0200, Giovanni Parodi via networkmanager-
> list wrote:
> > Hello everybody,
> > I have a problem connecting to a UMTS network on an embedded system.
> > Here are the details:
> > - Modem Quectel UC20
> > - packages installed: usbutils, usb_modeswitch, NetworkManager
> > (1.0.4), ModemManager (1.4.2).
> >
> > To activate network connection, I work as follows:
> >
> > // Start ModemManager with log debug
> > ModemManager --debug &
> >
> > // Enable modem
> > mmcli -m 0 -e
> >
> > // Start NetworkManager
> > NetworkManager &
> >
> > // cdc-wdm0 is the primary port oc the modem, look at the
> > following text.
> > nmcli c add type gsm ifname cdc-wdm0 con-name remoteConnection
> > apn ibox.tim.it
> >
> > // By this command I'm able to verify that the modem is
> > registered to the network
> > mmcli -m 0 -w
> >
> > Output is
> > /org/freedesktop/ModemManager1/Modem/0: Initial state,
> > 'registered
> >
> > The output of the command
> > mmcli -m 0
> > is:
> >
> > /org/freedesktop/ModemManager1/Modem/0 (device id
> > 'fdecd6b32808f6d001a07e35d54ac8635ac19228')
> >   -
> >   Hardware |   manufacturer: 'QUALCOMM INCORPORATED'
> >|  model: '0'
> >|   revision: 'UC20EQAR03A04M1024  1  [2014/05/05
> > 9:00:00]'
> >|  supported: 'gsm-umts'
> >|current: 'gsm-umts'
> >|   equipment id: '861075021304068'
> >   -
> >   System   | device: '/sys/devices/soc0/soc/210.aips-
> > bus/2184200.usb/ci_hdrc.1/usb2/2-1/2-1.2'
> >|drivers: 'option1, qmi_wwan'
> >| plugin: 'Generic'
> >|   primary port: 'cdc-wdm0'
> >|  ports: 'ttyUSB0 (qcdm), ttyUSB2 (at), cdc-wdm0
> > (qmi), wwan0 (net), ttyUSB3 (at)'
> >   -
> >   Numbers  |   own : 'unknown'
> >   -
> >   Status   |   lock: 'sim-pin2'
> >| unlock retries: 'sim-pin (3), sim-pin2 (3), sim-puk
> > (10), sim-puk2 (10)'
> >|  state: 'registered'
> >|power state: 'on'
> >|access tech: 'umts'
> >| signal quality: '36' (recent)
> >   -
> >   Modes|  supported: 'allowed: 2g; preferred: none
> >|  allowed: 3g; preferred: none
> >|  allowed: 2g, 3g; preferred: none
> >|  allowed: 2g, 3g; preferred: 2g
> >|  allowed: 2g, 3g; preferred: 3g'
> >|current: 'allowed: 2g, 3g; preferred: none'
> >   -
> >   Bands|  supported: 'cdma-bc15-aws, dcs, egsm, pcs, g850,
> > u2100, u900'
> >|current: 'cdma-bc15-aws, dcs, egsm, pcs, g850,
> > u2100, u900'
> >   -
> >   IP   |  supported: 'ipv4, ipv6, ipv4v6'
> >   -
> >   3GPP |   imei: '861075021304068'
> >|  enabled locks: 'none'
> >|operator id: '22201'
> >|  operator name: 'TIM'
> >|   subscription: 'unknown'
> >|   registration: 'home'
> >   -
> >   SIM  |   path: '/org/freedesktop/ModemManager1/SIM/0'
> >
> >   -
> >   Bearers  |  paths: 'none'
> >
> >
> > So, once again, it seems the modem is registered.
> > However the output of the command

nmcli and cdc-wdm0 device for UMTS connection

[Giovanni Parodi via networkmanager-list]

Hello everybody,
I have a problem connecting to a UMTS network on an embedded system.
Here are the details:
- Modem Quectel UC20
- packages installed: usbutils, usb_modeswitch, NetworkManager (1.0.4),
ModemManager (1.4.2).

To activate network connection, I work as follows:

// Start ModemManager with log debug
ModemManager --debug &

// Enable modem
mmcli -m 0 -e

// Start NetworkManager
NetworkManager &

// cdc-wdm0 is the primary port oc the modem, look at the following
text.
*nmcli c add type gsm ifname cdc-wdm0 con-name remoteConnection apn
ibox.tim.it *

// By this command I'm able to verify that the modem is registered to
the network
mmcli -m 0 -w

Output is
/org/freedesktop/ModemManager1/Modem/0: Initial state, 'registered

The output of the command
mmcli -m 0
is:

/org/freedesktop/ModemManager1/Modem/0 (device id
'fdecd6b32808f6d001a07e35d54ac8635ac19228')
  -
  Hardware |   manufacturer: 'QUALCOMM INCORPORATED'
   |  model: '0'
   |   revision: 'UC20EQAR03A04M1024  1  [2014/05/05 9:00:00]'
   |  supported: 'gsm-umts'
   |current: 'gsm-umts'
   |   equipment id: '861075021304068'
  -
  System   | device:
'/sys/devices/soc0/soc/210.aips-bus/2184200.usb/ci_hdrc.1/usb2/2-1/2-1.2'
   |drivers: 'option1, qmi_wwan'
   | plugin: 'Generic'
   |   primary port: 'cdc-wdm0'
   |  ports: 'ttyUSB0 (qcdm), ttyUSB2 (at), cdc-wdm0 (qmi),
wwan0 (net), ttyUSB3 (at)'
  -
  Numbers  |   own : 'unknown'
  -
  Status   |   lock: 'sim-pin2'
   | unlock retries: 'sim-pin (3), sim-pin2 (3), sim-puk (10),
sim-puk2 (10)'
   |  state: 'registered'
   |power state: 'on'
   |access tech: 'umts'
   | signal quality: '36' (recent)
  -
  Modes|  supported: 'allowed: 2g; preferred: none
   |  allowed: 3g; preferred: none
   |  allowed: 2g, 3g; preferred: none
   |  allowed: 2g, 3g; preferred: 2g
   |  allowed: 2g, 3g; preferred: 3g'
   |current: 'allowed: 2g, 3g; preferred: none'
  -
  Bands|  supported: 'cdma-bc15-aws, dcs, egsm, pcs, g850, u2100,
u900'
   |current: 'cdma-bc15-aws, dcs, egsm, pcs, g850, u2100,
u900'
  -
  IP   |  supported: 'ipv4, ipv6, ipv4v6'
  -
  3GPP |   imei: '861075021304068'
   |  enabled locks: 'none'
   |operator id: '22201'
   |  operator name: 'TIM'
   |   subscription: 'unknown'
   |   registration: 'home'
  -
  SIM  |   path: '/org/freedesktop/ModemManager1/SIM/0'

  -
  Bearers  |  paths: 'none'


So, once again, it seems the modem is registered.
However the output of the command
nmcli con
is as follows:

NAME  UUID  TYPE  DEVICE
remoteConnection  3c1a500d-fc67-4523-9ba9-6973249a859a  gsm   --

So it seems that the remoteConnection is not associated with any device (I
think that the device should be cdc-wdm0).

The output of
 nmcli dev
is:

DEVICE   TYPE  STATE CONNECTION
can0 can   disconnected  --
can1 can   disconnected  --
tunl0ipip  disconnected  --
wlan0wifi  disconnected  --
wwan0wwan  disconnected  --
bond0bond  unmanaged --
eth0 ethernet  unmanaged --
gre0 gre   unmanaged --
gretap0  gretapunmanaged --
lo   loopback  unmanaged --

And running the command
nmcli con up remoteConnection
I get the error:
Error: Connection activation failed: No suitable device found for
this connection

I'm working on an embedded device without gui, and the SW version are the
following ones:
   nmcli  version 1.0.4
mmcli version 1.4.2
I'm not able to upgrade those applications.

Is there any other test, further investigation that I can perform on this
topic?
Any help will be appreciated
Best regards
Giovanni
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