EM9190 randomly dial fail

[dailijin]

Hi Guys,


I am testing Sierra 5G modem EM9190. my kernel  version is V4.4.13 and use the default driver cdc_mbim.ko.  the modem randomly can't dial success after I reboot system.


I checked AT command 'AT!GSTATUS' and confirm the modem can connect cell station successfully, but mbim-network always execute fail.  the error log is "error: couldn't open the MbimDevice: Failure".


I am using libmbim version  1.14.0. do you any guys encounter the same issue?


[10.12.32.138]# mbimcli -d /dev/cdc-wdm3 --query-connection-state -v                                                                                                 
[22 Apr 2021, 08:41:38] [Debug] opening device...
[22 Apr 2021, 08:41:38] [Debug] [/dev/cdc-wdm3] Queried max control message size: 4096
[22 Apr 2021, 08:41:38] [Debug] [/dev/cdc-wdm3] Sent message...
<<<<<< RAW:
<<<<<<   length = 16
<<<<<<   data   = 01:00:00:00:10:00:00:00:01:00:00:00:00:10:00:00


[22 Apr 2021, 08:41:38] [Debug] [/dev/cdc-wdm3] Sent message (translated)...
<<<<<< Header:
<<<<<<   length      = 16
<<<<<<   type        = open (0x00000001)
<<<<<<   transaction = 1
<<<<<< Contents:
<<<<<<   max control transfer = 4096


[22 Apr 2021, 08:41:40] [Debug] [/dev/cdc-wdm3] Received message...
>>>>>> RAW:
>>>>>>   length = 16
>>>>>>   data   = 01:00:00:80:10:00:00:00:01:00:00:00:02:00:00:00


[22 Apr 2021, 08:41:40] [Debug] getting open done result failed: closed
error: couldn't open the MbimDevice: Failure
















--

Best Regards,
Dai,Lijin
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