Sierra wireless modem network selection preference

[Dan Williams]

On Fri, 2018-04-27 at 16:27 +0200, Erik Kazandjian wrote:
> Hi,
> 
> I have 2 identical Sierra Wireless modems. If I call sudo qmicli -d 
> /dev/cdc-wdm0 --nas-get-system-selection-preference on the first
> modem I get
> 
> 
>      Emergency mode: 'no'
>      Mode preference: 'umts, lte'
>      Band preference: 'wcdma-2100, wcdma-850-us, wcdma-800, wcdma-
> 900, 
> wcdma-1700-japan'
>      LTE band preference: '1, 3, 5, 7, 8, 18, 19, 21, 38, 39, 40, 41'
>      TD-SCDMA band preference: 'f'
>      Roaming preference: 'any'
>      Network selection preference: '*automatic*'
>      Service domain preference: 'cs-ps'
>      Service selection preference: 'automatic'
> 
> 
> on the second I get
> 
>      Emergency mode: 'no'
>      Mode preference: 'umts, lte'
>      Band preference: 'wcdma-2100, wcdma-850-us, wcdma-800, wcdma-
> 900, 
> wcdma-1700-japan'
>      LTE band preference: '1, 3, 5, 7, 8, 18, 19, 21, 38, 39, 40, 41'
>      TD-SCDMA band preference: 'f'
>      Roaming preference: 'any'
>      Network selection preference: '*manual*'
>      Service domain preference: 'cs-ps'
>      Service selection preference: 'automatic'
> 
> 
> Is there a way to change the Network selection preference

With libqmi yes, but we don't currently have the auto/manual exposed
through qmicli unfortunately.  I took a quick look and it's not a 10
minute task unfortunately due to the existing --nas-set-system-
selection-preference syntax.

If you're just looking to switch this modem to 'auto' and be done
though, that wouldn't be too hard with a one-off patch.

Dan