network scan not returning results?

[Dan Williams]

On Thu, 2019-05-16 at 11:07 +0100, Paul Gildea wrote:
> When running a scan on different systems I've noticed that some of
> them do
> not return the network scan results. Do you know why this may be the
> case?
> Example:

Does this happen consistently, or only intermittently on these systems?

My first thought is RAT settings. Also IME sometimes scans just fail
and you have to do another one :(

Try comparing --nas-get-technology-preference, --nas-get-system-
selection-preference, --dms-get-band-capabilities and see if there are
differences too?

Dan

> qmicli -p -d /dev/cdc-wdm2 --nas-network-scan
> [16 May 2019, 09:35:03] -Warning ** [/dev/cdc-wdm2] requested auto
> mode but
> no MBIM QMUX support available
> [/dev/cdc-wdm2] Successfully scanned networks
> 
> 
> It will just mention that the scan was a success but no networks are
> displayed, there are plenty of them around (and the modem is
> connected to
> one). I am using qmicli 1.18.2 and seeing this with MC7455's. Also
> noticed
> with MC7430. Yet it works fine consistently on other systems I am
> running
> the same command on in roughly the same location, connected to the
> same
> network:
> 
> qmicli -p -d /dev/cdc-wdm0 --nas-network-scan
> [16 May 2019, 10:50:39] -Warning ** [/dev/cdc-wdm0] requested auto
> mode but
> no MBIM QMUX support available
> [/dev/cdc-wdm0] Successfully scanned networks
> Network [0]:
>         MCC: '272'
>         MNC: '1'
>         Status: 'available, home, not-forbidden, preferred'
>         Description: 'vodafone IE'
> Network [1]:
>         MCC: '272'
>         MNC: '1'
>         Status: 'current-serving, home, not-forbidden, preferred'
>         Description: 'vodafone IE'
> Network [2]:
>         MCC: '272'
>         MNC: '3'
>         Status: 'available, roaming, forbidden, not-preferred'
>         Description: 'IRL - METEOR'
> Network [3]:
>         MCC: '272'
>         MNC: '2'
>         Status: 'available, roaming, not-forbidden, not-preferred'
>         Description: '3'
> Network [4]:
>         MCC: '272'
>         MNC: '3'
>         Status: 'available, roaming, forbidden, not-preferred'
>         Description: 'IRL - METEOR'
> Network [5]:
>         MCC: '272'
>         MNC: '5'
>         Status: 'available, roaming, forbidden, not-preferred'
>         Description: '3'
> Network [0]:
>         MCC: '272'
>         MNC: '1'
>         RAT: 'umts'
> Network [1]:
>         MCC: '272'
>         MNC: '1'
>         RAT: 'lte'
> Network [2]:
>         MCC: '272'
>         MNC: '3'
>         RAT: 'lte'
> Network [3]:
>         MCC: '272'
>         MNC: '2'
>         RAT: 'umts'
> Network [4]:
>         MCC: '272'
>         MNC: '3'
>         RAT: 'umts'
> Network [5]:
>         MCC: '272'
>         MNC: '5'
>         RAT: 'lte'
> Network [0]:
>         MCC: '272'
>         MNC: '1'
>         MCC with PCS digit: 'no'
> Network [1]:
>         MCC: '272'
>         MNC: '1'
>         MCC with PCS digit: 'no'
> Network [2]:
>         MCC: '272'
>         MNC: '3'
>         MCC with PCS digit: 'no'
> Network [3]:
>         MCC: '272'
>         MNC: '2'
>         MCC with PCS digit: 'no'
> Network [4]:
>         MCC: '272'
>         MNC: '3'
>         MCC with PCS digit: 'no'
> Network [5]:
>         MCC: '272'
>         MNC: '5'
>         MCC with PCS digit: 'no'
> 
> 
> Perhaps modem firmware related? RAT settings? I am looking into that
> now.
> 
> Regards,
> 
> --
> Paul
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