problem with dell latitude

[Aleksander Morgado]

On Tue, Jul 18, 2017 at 1:45 PM, Bartłomiej Knabel
<bartlomiej.knabel at gmail.com> wrote:
> I've problem with ModemManager (newest, stable) and dell latitude e6540
>
> ModemManager /dev/cdc-wdm0 --debug
>
> output: https://pastebin.com/9e57n3Zb
>
> do You have any hint for me? I'm fighting with it last 3 days....

The issue is that bringing the radio up fails.

ModemManager[28924]: [/dev/cdc-wdm0] Sent message...
<<<<<< RAW:
<<<<<<   length = 52
<<<<<<   data   =
03:00:00:00:34:00:00:00:0E:00:00:00:01:00:00:00:00:00:00:00:A2:89:CC:33:BC:BB:8B:4F:B6:B0:13:3E:C2:AA:E6:DF:03:00:00:00:01:00:00:00:04:00:00:00:01:00:00:00
ModemManager[28924]: [/dev/cdc-wdm0] Sent message (translated)...
<<<<<< Header:
<<<<<<   length      = 52
<<<<<<   type        = command (0x00000003)
<<<<<<   transaction = 14
<<<<<< Fragment header:
<<<<<<   total   = 1
<<<<<<   current = 0
<<<<<< Contents:
<<<<<<   service = 'basic-connect' (a289cc33-bcbb-8b4f-b6b0-133ec2aae6df)
<<<<<<   cid     = 'radio-state' (0x00000003)
<<<<<<   type    = 'set' (0x00000001)
ModemManager[28924]: [/dev/cdc-wdm0] Received message...
>>>>>> RAW:
>>>>>>   length = 56
>>>>>>   data   = 03:00:00:80:38:00:00:00:0E:00:00:00:01:00:00:00:00:00:00:00:A2:89:CC:33:BC:BB:8B:4F:B6:B0:13:3E:C2:AA:E6:DF:03:00:00:00:02:00:00:00:08:00:00:00:01:00:00:00:00:00:00:00
ModemManager[28924]: [/dev/cdc-wdm0] Received message (translated)...
>>>>>> Header:
>>>>>>   length      = 56
>>>>>>   type        = command-done (0x80000003)
>>>>>>   transaction = 14
>>>>>> Fragment header:
>>>>>>   total   = 1
>>>>>>   current = 0
>>>>>> Contents:
>>>>>>   status error = 'Failure' (0x00000002)
>>>>>>   service      = 'basic-connect' (a289cc33-bcbb-8b4f-b6b0-133ec2aae6df)
>>>>>>   cid          = 'radio-state' (0x00000003)

Is this a custom system? Looks like ModemManager isn't built with QMI
and/or with an old libqmi not supporting QMI over MBIM. Which libqmi
and libmbim versions are being used?

Once the initial failure happens during the Set Radio State command,
we should have been trying the "QMI FCC auth" sequence with QMI over
MBIM, but I don't see that in the logs.

-- 
Aleksander
https://aleksander.es