mmcli set allowed and preferred modes - internal failure

[Leo K]

Hi Aleksander,

It's the BroadMobi BM806U (Qualcomm MDM 9225) and I suspect it was taken
out from a D-Link DWR-921 C3:

https://openwrt.org/toh/d-link/d-link_dwr-921#tab__revision_c3

It only has the cdc-wdm0 and wwan0 ports.

I was able to enable the LTE-FDD band 1, 3 and 8 earlier but now stuck with
preferred mode = none.

Please let me know if you need any additional information.

Many thanks,
Leo



On Thu, Jun 25, 2020 at 9:31 PM Aleksander Morgado <aleksander at aleksander.es>
wrote:

> Hey,
>
>
> > It seems that my modem supports pretty much all modes:
> >
> >   Modes    |         supported: allowed: 2g; preferred: none
> >            |                    allowed: 3g; preferred: none
> >            |                    allowed: 2g, 3g; preferred: 3g
> >            |                    allowed: 2g, 3g; preferred: 2g
> >            |                    allowed: 2g, 4g; preferred: 4g
> >            |                    allowed: 2g, 4g; preferred: 2g
> >            |                    allowed: 3g, 4g; preferred: 3g
> >            |                    allowed: 3g, 4g; preferred: 4g
> >            |                    allowed: 2g, 3g, 4g; preferred: 4g
> >            |                    allowed: 2g, 3g, 4g; preferred: 3g
> >            |                    allowed: 2g, 3g, 4g; preferred: 2g
> >            |           current: allowed: 3g; preferred: none
> >
> > However, when I'm trying to set the preferred mode to 4g, I'm getting
> this:
> >
> > pi at okamoto:~ $ sudo mmcli -m 0 --set-allowed-modes='3g|4g'
> --set-preferred-mode='4g'
> > error: couldn't set current modes:
> 'GDBus.Error:org.freedesktop.libqmi.Error.Protocol.Internal: QMI protocol
> error (3): 'Internal''
> >
> > From the debug log:
> >
> > ModemManager[11730]: [/dev/cdc-wdm0] sent message...
> > <<<<<< RAW:
> > <<<<<<   length = 28
> > <<<<<<   data   =
> 01:1B:00:00:03:04:00:12:00:33:00:0F:00:1E:03:00:02:08:05:17:01:00:01:11:02:00:18:00
> > ModemManager[11730]: [/dev/cdc-wdm0] sent generic request (translated)...
> > <<<<<< QMUX:
> > <<<<<<   length  = 27
> > <<<<<<   flags   = 0x00
> > <<<<<<   service = "nas"
> > <<<<<<   client  = 4
> > <<<<<< QMI:
> > <<<<<<   flags       = "none"
> > <<<<<<   transaction = 18
> > <<<<<<   tlv_length  = 15
> > <<<<<<   message     = "Set System Selection Preference" (0x0033)
> > <<<<<< TLV:
> > <<<<<<   type       = "Acquisition Order Preference" (0x1e)
> > <<<<<<   length     = 3
> > <<<<<<   value      = 02:08:05
> > <<<<<<   translated = { [0] = 'lte ' [1] = 'umts '}
> > <<<<<< TLV:
> > <<<<<<   type       = "Change Duration" (0x17)
> > <<<<<<   length     = 1
> > <<<<<<   value      = 01
> > <<<<<<   translated = permanent
> > <<<<<< TLV:
> > <<<<<<   type       = "Mode Preference" (0x11)
> > <<<<<<   length     = 2
> > <<<<<<   value      = 18:00
> > <<<<<<   translated = umts, lte
> > ModemManager[11730]: [/dev/cdc-wdm0] received message...
> > <<<<<< RAW:
> > <<<<<<   length = 20
> > <<<<<<   data   =
> 01:13:00:80:03:04:02:12:00:33:00:07:00:02:04:00:01:00:03:00
> > ModemManager[11730]: [/dev/cdc-wdm0] received generic response
> (translated)...
> > <<<<<< QMUX:
> > <<<<<<   length  = 19
> > <<<<<<   flags   = 0x80
> > <<<<<<   service = "nas"
> > <<<<<<   client  = 4
> > <<<<<< QMI:
> > <<<<<<   flags       = "response"
> > <<<<<<   transaction = 18
> > <<<<<<   tlv_length  = 7
> > <<<<<<   message     = "Set System Selection Preference" (0x0033)
> > <<<<<< TLV:
> > <<<<<<   type       = "Result" (0x02)
> > <<<<<<   length     = 4
> > <<<<<<   value      = 01:00:03:00
> > <<<<<<   translated = FAILURE: Internal
> >
> >
> > May I know if I entered the syntax correctly please?
> >
>
> Syntax is correct, not sure why the QMI command fails like that though.
> What device is this?
>
> --
> Aleksander
> https://aleksander.es
>
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