ModemManager using QMI doesnt always work in the first attemp.

[Aleksander Morgado]

On Tue, Nov 17, 2015 at 11:20 PM, Dan Williams <dcbw at redhat.com> wrote:
> On Tue, 2015-11-17 at 18:10 +0100, José  wrote:
>> Sorry for the delay.
>>
>> This is the debug log for the Telit LE910 with a Vodafone SIM:
>> http://pastebin.com/U7EBv8sr
>>
>> The test case is:
>> - Boot the device
>> - Issue: mmcli -m 0 --simple-connect=apn=ac.vodafone.es
>> This command returns: error: couldn't connect the modem: 'The
>> connection is
>> closed'
>
> It actually looks like ModemManager is getting kicked off D-Bus, which
> is usually caused by MM trying to send non-UTF-8 strings in a signal or
> D-Bus reply...

This may be the issue for that disconnection:

>>>>>> TLV:
>>>>>>   type       = "Current PLMN" (0x12)
>>>>>>   length     = 15
>>>>>>   value      = D6:00:01:00:0A:F6:37:39:6C:7E:BB:CB:A0:E2:14
>>>>>>   translated = [ mcc = '214' mnc = '1' description = '��~܋b' ]

We should validate the reported PLMN description string.

-- 
Aleksander
https://aleksander.es