Sierra EM7455 - Couldn't check if unlock required: 'SIM not inserted'

Alex Pintilie pintiliea81 at gmail.com
Sat Feb 4 21:34:42 UTC 2017


Hello Aleksander,

I was lucky, after a reboot it just worked. Yes the EM7455 is integrated in
the laptop. Thanks for making this stuff work!


I executed the commands you said, with the effect that the connection
stopped working and I had to restart the ModemManager.


I'll just insert the output here:

-------------------------------------------

# qmicli -d /dev/cdc-wdm0 --device-open-mbim --dms-uim-get-pin-status

error: operation failed: MBIM error: Transaction timed out
error: couldn't release client: MBIM error: Transaction timed out**
Qmi:ERROR:qmi-device.c:3239:finalize: assertion failed: (g_hash_table_size
(self->priv->transactions) == 0)
Canceled


# systemctl stop ModemManager

Feb 04 07:07:51 host ModemManager[757]: [/dev/cdc-wdm0] unexpected port
hangup!
Feb 04 07:07:51 host ModemManager[757]: [/dev/cdc-wdm0] unexpected port
hangup!
Feb 04 07:08:11 host ModemManager[757]: <warn>  Disabling modems took too
long, shutting down with '1' modems around
Feb 04 07:08:11 host ModemManager[757]: <info>  ModemManager is shut down
Feb 04 07:08:11 host systemd[1]: Stopped Modem Manager.

# systemctl start ModemManager

# qmicli -d /dev/cdc-wdm0 --device-open-mbim --uim-get-card-status

[/dev/cdc-wdm0] Successfully got card status
Provisioning applications:
    Primary GW:   slot '0', application '0'
    Primary 1X:   session doesn't exist
    Secondary GW: session doesn't exist
    Secondary 1X: session doesn't exist
Card [0]:
    Card state: 'present'
    UPIN state: 'not-initialized'
        UPIN retries: '0'
        UPUK retries: '0'
    Application [0]:
        Application type:  'usim (2)'
        Application state: 'ready'
        Application ID:
            <removed>
        Personalization state: 'ready'
        UPIN replaces PIN1: 'no'
        PIN1 state: 'disabled'
            PIN1 retries: '3'
            PUK1 retries: '10'
        PIN2 state: 'enabled-not-verified'
            PIN2 retries: '3'
            PUK2 retries: '10'
    Application [1]:
        Application type:  'isim (5)'
        Application state: 'detected'
        Application ID:
            <removed>
        Personalization state: 'unknown'
        UPIN replaces PIN1: 'no'
        PIN1 state: 'not-initialized'
            PIN1 retries: '0'
            PUK1 retries: '0'
        PIN2 state: 'not-initialized'
            PIN2 retries: '0'
            PUK2 retries: '0'
error: couldn't release client: MBIM error: Transaction timed out**
Qmi:ERROR:qmi-device.c:3239:finalize: assertion failed: (g_hash_table_size
(self->priv->transactions) == 0)
Canceled

# systemctl restart ModemManager

2017-01-24 11:00 GMT+01:00 Aleksander Morgado <aleksander at aleksander.es>:

> On Mon, Jan 23, 2017 at 11:35 PM, Alex Pintilie <pintiliea81 at gmail.com>
> wrote:
> >
> > if you can't help me with this no one can. I have a T460s Lenovo with
> Debian
> > and this EM7455 thing that refuses to work.
> >
> > I posted all the info I could find here:
> >
> > http://pastebin.com/1yzvTzit
> >
> > I use only one SIM card, which works OK with an USB external modem from
> > TP-Link, as proof that it works.
> >
> > Same SIM in the EM7455 doesn't work. It says "SIM not inserted".
> >
> >
> > Maybe I'm lucky and I'm just missing something obvious?
>
> Is the module integrated in the laptop? I wonder why you get the SIM
> not detected, which is what the modem is reporting:
>
> ModemManager[2508]: <debug> [1485208245.529656] [mm-iface-modem.c:266]
> load_unlock_required_ready(): Couldn't check if unlock required: 'SIM
> not inserted'
> ModemManager[2508]: <warn>  [1485208245.529956]
> [mm-broadband-modem.c:9541] iface_modem_initialize_ready(): Modem
> couldn't be initialized: Couldn't check unlock status: SIM not
> inserted
> ModemManager[2508]: <info>  [1485208245.530024]
> [mm-iface-modem.c:1431] __iface_modem_update_state_internal(): Modem:
> state changed (unknown -> failed)
>
>
> What's the output of:
>
> $ sudo qmicli -d /dev/cdc-wdm0 --device-open-mbim --dms-uim-get-pin-status
> $ sudo qmicli -d /dev/cdc-wdm0 --device-open-mbim --uim-get-card-status
>
> --
> Aleksander
> https://aleksander.es
>
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