I'd added the NM_SERIAL_DEBUG enviroment args to 1 and checked the connection.
Here's the result of syslog (NetworkManager output)
May 7 19:39:55 eeepc-ubuntu NetworkManager: <debug> [1241692795.738849]
nm_serial_device_open(): (ttyUSB0) opening device...
May 7 19:39:55 eeepc-ubuntu NetworkManager: <info> Activation (ttyUSB0) Stage
1 of 5 (Device Prepare) complete.
May 7 19:39:55 eeepc-ubuntu NetworkManager: <debug> [1241692795.848876]
nm_serial_debug(): Sending: 'ATZ E0 V1 X4 &C1 +FCLASS=0 '
May 7 19:39:55 eeepc-ubuntu NetworkManager: <debug> [1241692795.906829]
nm_serial_debug(): Got: 'ATZ E0 V1 X4 &C1 +FCLASS=0 '
May 7 19:39:55 eeepc-ubuntu NetworkManager: <debug> [1241692795.916967]
nm_serial_debug(): Got: 'ATZ E0 V1 X4 &C1 +FCLASS=0 OK '
May 7 19:39:55 eeepc-ubuntu NetworkManager: <debug> [1241692795.917147]
nm_serial_debug(): Sending: 'AT+CPIN? '
May 7 19:39:55 eeepc-ubuntu NetworkManager: <debug> [1241692795.936987]
nm_serial_debug(): Got: ' +CPIN: READY OK '
May 7 19:39:55 eeepc-ubuntu NetworkManager: <debug> [1241692795.937146]
nm_serial_debug(): Sending: 'ATZ E0 V1 X4 &C1 +FCLASS=0 '
May 7 19:39:56 eeepc-ubuntu NetworkManager: <debug> [1241692796.004022]
nm_serial_debug(): Got: ' OK '
May 7 19:39:56 eeepc-ubuntu NetworkManager: <info> (ttyUSB0): powering up...
May 7 19:39:56 eeepc-ubuntu NetworkManager: <debug> [1241692796.004286]
nm_serial_debug(): Sending: 'AT+CFUN=1 '
May 7 19:39:56 eeepc-ubuntu NetworkManager: <debug> [1241692796.026087]
nm_serial_debug(): Got: ' OK '
May 7 19:39:56 eeepc-ubuntu NetworkManager: <debug> [1241692796.026278]
nm_serial_debug(): Sending: 'AT+CGMM '
May 7 19:39:56 eeepc-ubuntu NetworkManager: <debug> [1241692796.044084]
nm_serial_debug(): Got: ' D02HW OK '
May 7 19:39:56 eeepc-ubuntu NetworkManager: <debug> [1241692796.044362]
nm_serial_debug(): Sending: 'AT+CREG? '
May 7 19:39:56 eeepc-ubuntu NetworkManager: <debug> [1241692796.064042]
nm_serial_debug(): Got: ' +CREG: 0,0 OK '
('AT+CREG?' result ' +CREG: 0,0 OK ' continues 15 times)
May 7 19:40:11 eeepc-ubuntu NetworkManager: <WARN>
automatic_registration_response(): Automatic registration failed: not
registered and not searching.
If I enter the 'AT+CGREG?' manually, it returns '+CGREG: 0,1 OK'
I think "priv->needs_cgreg" value have to be "true" (nm-gsm-device.c line 456)
--
CDMA modem don't answer the correct command set
https://bugs.launchpad.net/bugs/359063
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