Set technology preference to chosen type only.

[Dan Williams]

On Wed, 2017-02-15 at 11:53 -0500, Adam Sherman wrote:
> On 2017-02-15 11:49 AM, Aleksander Morgado wrote:
> > > I just did the above, mostly because the card kept connecting on
> > > UMTS
> > > instead of LTE. (It would pick LTE maybe 50% of the time, sitting
> > > at the
> > > same location.)
> > > 
> > > Now my card won't register.  Ever heard of that?
> > 
> > Is the LTE network coverage good enough where you're at? You can
> > always set SSP back to "lte|umts".
> 
> I'm usually on LTE with the laptop in exactly the same place, with
> near-100 signal strength, it just bumps to UMTS on occasion.
> 
> I tried the following:
> 
> $ sudo qmicli -d /dev/cdc-wdm0 -p
> --nas-set-system-selection-preference="lte|umts"
> error: couldn't set operating mode: QMI protocol error (25):
> 'DeviceUnsupported'
> 
> What would the correct argument be?

You might try "lte|umts|gsm" because sometimes the devices don't allow
separating GSM and UTMS modes.

Dan