Aw: Re: Re: dell branded DW5829e (T77W968) FCC unlock failed

[sven.friedmann at email.de]

Hello Aleksander,

> 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?

Does not change anything.


For completeness I have two Dell notebooks for testing.

The latitude 7410 (intel 10th gen) came from the factory with the Dell DW5829e. This combination is officially supported by Dell.

latitude 7410 under Windows:
- bios: wwan bus interface on "pcie"
- the wwan connection works fine immediately
- last but not least i tried the dell customer kit. which ends with the error "no custkit found".


latitude 7410 under ubuntu daily live usb boot (mm 1.16.2 + libqmi 1.28.6):
- bios: wwan bus interface set to "usb"
- the wwan connection works immediately without problems

Unfortunately i have not saved any debug output from modem manager.


Latitude 5420 (intel 11th gen) rebuilt with the same DW5829e card + NVMe unfortunately does not work.


latitude 5420 under windows:
- bios: wwan bus interface set to "pcie" => no card is detected (probably a firmware issue with pcie mode)
- bios: wwan bus interface on "usb" => the card is recognized, but only the generic built-in driver works. the dell/foxconn driver seems to recognize the device only in pcie mode
- no wwan connection can be established

latitude 5420 running ubuntu daily live usb boot (mm 1.16.2 + libqmi 1.28.6):
- bios: wwan bus interface on "pcie" => no card is detected...'lspci' shows no card (confirms firmware problem)
- bios: wwan bus interface set to "usb" => the card is detected, but the card remains in disabled state


> P.S.: I *never* got that operation working with a Dell branded modem,
> so maybe there's something else needed?
>
> --
> Aleksander
> https://aleksander.es
>