dell branded DW5829e (T77W968) FCC unlock failed

[Aleksander Morgado]

Hey,

> > >
> > > i'm stuck on activating the wwan card.
> > > I know there is a dell customer kit (win only/dell supported laptop) and this issue as been already discussed. [1]
> > >
> > > I'm running modemmanager 1.16.6 and libqmi 1.28.6 containing the FCC unlock bits.
> > >
> > > error:
> > > ModemManager[133848]: <debug> [1625220976.150570] [modem0] couldn't run FCC unlock: QMI protocol error (17): 'MissingArgument'
> > >
> >
> > There are 2 different FCC unlock operations implemented in MM 1.16.6;
> > the original one we wrote for Sierra re-branded modules, and the new
> > one we wrote for Foxconn modules. This second one is only enabled for
> > selected devices, and the one you're using isn't included yet.
> >
> > Could you run manually the following commands?
> >
> > $ sudo qmicli -d /dev/cdc-wdm0 -p
> > --dms-foxconn-set-fcc-authentication=0 --verbose
>
> $ sudo qmicli -d /dev/cdc-wdm0 -p --dms-foxconn-set-fcc-authentication=0 --verbose

...

> [05 Jul 2021, 10:09:19] [Debug] Asynchronously running Foxconn FCC authentication...
> [05 Jul 2021, 10:09:19] [Debug] [/dev/cdc-wdm0] Sent message...
> <<<<<< RAW:
> <<<<<<   length = 17
> <<<<<<   data   = 01:10:00:00:02:02:00:01:00:71:55:04:00:01:01:00:00
>
> [05 Jul 2021, 10:09:19] [Debug] [/dev/cdc-wdm0] Sent vendor-specific (0x0489) request (translated)...
> <<<<<< QMUX:
> <<<<<<   length  = 16
> <<<<<<   flags   = 0x00
> <<<<<<   service = "dms"
> <<<<<<   client  = 2
> <<<<<< QMI:
> <<<<<<   flags       = "none"
> <<<<<<   transaction = 1
> <<<<<<   tlv_length  = 4
> <<<<<<   message     = "Foxconn Set FCC Authentication" (0x5571)
> <<<<<< TLV:
> <<<<<<   type       = "Value" (0x01)
> <<<<<<   length     = 1
> <<<<<<   value      = 00
> <<<<<<   translated = 0
>
> [05 Jul 2021, 10:09:19] [Debug] [/dev/cdc-wdm0] Sent message...
> <<<<<< RAW:
> <<<<<<   length = 65
> <<<<<<   data   = 03:00:00:00:41:00:00:00:05:00:00:00:01:00:00:00:00:00:00:00:D1:A3:0B:C2:F9:7A:6E:43:BF:65:C7:E2:4F:B0:F0:D3:01:00:00:00:01:00:00:00:11:00:00:00:01:10:00:00:02:02:00:01:00:71:55:04:00:01:01:00:00
>
> [05 Jul 2021, 10:09:19] [Debug] [/dev/cdc-wdm0] Sent message (translated)...
> <<<<<< Header:
> <<<<<<   length      = 65
> <<<<<<   type        = command (0x00000003)
> <<<<<<   transaction = 5
> <<<<<< Fragment header:
> <<<<<<   total   = 1
> <<<<<<   current = 0
> <<<<<< Contents:
> <<<<<<   service = 'qmi' (d1a30bc2-f97a-6e43-bf65-c7e24fb0f0d3)
> <<<<<<   cid     = 'msg' (0x00000001)
> <<<<<<   type    = 'set' (0x00000001)
> <<<<<< Fields:
> <<<<<<   QmiMsg = '01:10:00:00:02:02:00:01:00:71:55:04:00:01:01:00:00'
>
> [05 Jul 2021, 10:09:19] [Debug] [/dev/cdc-wdm0] Received message...
> >>>>>> RAW:
> >>>>>>   length = 68
> >>>>>>   data   = 03:00:00:80:44:00:00:00:05:00:00:00:01:00:00:00:00:00:00:00:D1:A3:0B:C2:F9:7A:6E:43:BF:65:C7:E2:4F:B0:F0:D3:01:00:00:00:00:00:00:00:14:00:00:00:01:13:00:80:02:02:02:01:00:71:55:07:00:02:04:00:00:00:00:00
>
> [05 Jul 2021, 10:09:19] [Debug] [/dev/cdc-wdm0] Received message (translated)...
> >>>>>> Header:
> >>>>>>   length      = 68
> >>>>>>   type        = command-done (0x80000003)
> >>>>>>   transaction = 5
> >>>>>> Fragment header:
> >>>>>>   total   = 1
> >>>>>>   current = 0
> >>>>>> Contents:
> >>>>>>   status error = 'None' (0x00000000)
> >>>>>>   service      = 'qmi' (d1a30bc2-f97a-6e43-bf65-c7e24fb0f0d3)
> >>>>>>   cid          = 'msg' (0x00000001)
> >>>>>> Fields:
> >>>>>>   QMUX = '01:13:00:80:02:02:02:01:00:71:55:07:00:02:04:00:00:00:00:00'
>
> [05 Jul 2021, 10:09:19] [Debug] [/dev/cdc-wdm0] Received message...
> <<<<<< RAW:
> <<<<<<   length = 20
> <<<<<<   data   = 01:13:00:80:02:02:02:01:00:71:55:07:00:02:04:00:00:00:00:00
>
> [05 Jul 2021, 10:09:19] [Debug] [/dev/cdc-wdm0] Received vendor-specific (0x0489) response (translated)...
> <<<<<< QMUX:
> <<<<<<   length  = 19
> <<<<<<   flags   = 0x80
> <<<<<<   service = "dms"
> <<<<<<   client  = 2
> <<<<<< QMI:
> <<<<<<   flags       = "response"
> <<<<<<   transaction = 1
> <<<<<<   tlv_length  = 7
> <<<<<<   message     = "Foxconn Set FCC Authentication" (0x5571)
> <<<<<< TLV:
> <<<<<<   type       = "Result" (0x02)
> <<<<<<   length     = 4
> <<<<<<   value      = 00:00:00:00
> <<<<<<   translated = SUCCESS
>
> [/dev/cdc-wdm0] Successfully run Foxconn FCC authentication

That seems fine to me.

>
> $ sudo mmcli -m 2 --enable
> error: couldn't enable the modem: 'GDBus.Error:org.freedesktop.ModemManager1.Error.Core.Retry: Invalid transition'

What about completely restarting ModemManager after you have sent the
qmicli command?

P.S.: I *never* got that operation working with a Dell branded modem,
so maybe there's something else needed?

-- 
Aleksander
https://aleksander.es