Cant connect to network on thinkpad x240

[Alfredo Palhares]

Hello everyone,

I am having problems using modem manager on the built-in Ericsson N5321
(3.5G) of my thinkpad x240.

-> % lsusb
Bus 001 Device 003: ID 058f:9540 Alcor Micro Corp. AU9540 Smartcard Reader
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 17ef:1012 Lenovo
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 005: ID 5986:0268 Acer, Inc
Bus 002 Device 004: ID 8087:07dc Intel Corp.
Bus 002 Device 003: ID 138a:0017 Validity Sensors, Inc. Fingerprint Reader
Bus 002 Device 002: ID 0bdb:193e Ericsson Business Mobile Networks BV
Bus 002 Device 010: ID 04d9:2013 Holtek Semiconductor, Inc. Keyboard [Das
Keyboard]
Bus 002 Device 008: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 002 Device 007: ID 17ef:1011 Lenovo
Bus 002 Device 009: ID 145f:01ac Trust
Bus 002 Device 006: ID 17ef:1012 Lenovo
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

The modem gets detected by modem manager:
-> % mmcli -L

Found 1 modems:
/org/freedesktop/ModemManager1/Modem/0 [Lenovo] N5321 gw

But when connecting with --simple-connect.
-> % mmcli -m 0
--simple-connect="pin=<pin>,apn=internet,user=tmn,password=tmn"
error: couldn't connect the modem:
'GDBus.Error:org.freedesktop.ModemManager1.Error.MobileEquipment.NetworkTimeout:
Network timeout'

So i set the logging level to DEBUG:
-> % mmcli -G DEBUG
Successfully set logging level

And this is the logging output:


ModemManager[31417]: <info>  Simple connect started...
ModemManager[31417]: <debug>    PIN: <pin>
ModemManager[31417]: <debug>    Operator ID: unspecified
ModemManager[31417]: <debug>    Allowed roaming: yes
ModemManager[31417]: <debug>    APN: internet
ModemManager[31417]: <debug>    IP family: unspecified
ModemManager[31417]: <debug>    Allowed authentication: unspecified
ModemManager[31417]: <debug>    User: tmn
ModemManager[31417]: <debug>    Password: tmn
ModemManager[31417]: <debug>    Number: unspecified
ModemManager[31417]: <info>  Simple connect state (4/8): Wait to get fully
enabled
ModemManager[31417]: <info>  Simple connect state (5/8): Register
ModemManager[31417]: <debug> Launching automatic network registration...
ModemManager[31417]: <debug> (ttyACM0) device open count is 2 (open)
ModemManager[31417]: <debug> (ttyACM0): --> 'AT+COPS=0<CR>'
ModemManager[31417]: <debug> (ttyACM0): <-- '<CR><LF>+CME ERROR: 4<CR><LF>'
ModemManager[31417]: <debug> Got failure code 4: Operation not
supportedModemManager[31417]: <debug> Modem
/org/freedesktop/ModemManager1/Modem/0: access technology changed (umts ->
unknown)
ModemManager[31417]: <debug> (ttyACM0) device open count is 1 (close)

Any ideas what could I be doing wrong? How to further debug the problem?

Regards,
Alfredo Palhares
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