Re: Hello, please help with my 3G device

[Aleksander Morgado <aleksander lanedo com>]

> > > Hello, it works now! nearly perfect, but still another problem, how
> > > could I lock the
> > > network to 3g(td-scdma), and not automaticly switch back and forth between
> > > 3g and 2g(edge, sometimes even gprs)? My signal here is sometimes a little
> > > low,
> > > and I'd like to not switch back to 2g.
> > >
> > > I tried the option 'Type', change it from 'any' to '3G(UMTS/HSPA)',
> > > then the profile
> > > didn't work.
> > >
> > > Again the detailed log.
> >
> > I cannot see any "AT^SYSCFG" call in that log, which is the Huawei-specific
> > way to get/set allowed modes.. so there's something wrong somewhere.
> > Specifying the allowed mode in the Simple Connect settings should trigger
> > mode change if the current allowed modes are different than the requested
> > ones.
> >
> > Anyway, can you try to run the following between plugging the modem and
> > launching the connection request (assuming here the modem gets index 0)?
> >
> > $> sudo dbus-send \
> >      --system \
> >      --dest=org.freedesktop.ModemManager \
> >      --print-reply \
> >      /org/freedesktop/ModemManager/Modems/0 \
> >      org.freedesktop.ModemManager.Modem.Gsm.Network.SetAllowedMode \
> >      uint32:4
>
> It simply return the following line:
> Error org.freedesktop.ModemManager.Modem.OperationNotSupported:
> Operation not supported

Probably your modem doesn't support mode switching with AT^SYSCFG then...

--
Aleksander