Sierra Wireless EM7305 1199:9063: Signal state indication: 99 --> 0%

[Dan Williams]

On Wed, 2017-01-04 at 23:45 +0000, Pedro Pessoa wrote:
> Hi,
> 
> I'm looking for hints on why I can't seem to get this modem to
> connect. This is Fedora 25 with ModemManager-1.6.4-1.fc25.x86_64.
> 
> From what I can tell on the debug session further down, it aborts the
> connection in progress when it receives a "Signal state indication:
> 99 --> 0%". But there's good coverage and immediately before and
> right after the modem reports ~70%.
> 
> Funny thing is that I can send SMS with it and mmcli.
> 
> Any hints?

The signal change is a side effect of the modem detaching from the
network because for whatever reason it or the network doesn't like the
packet data connection attempt:

<debug> Received notification (service 'basic-connect', command 'packet-service')
<debug> Packet service state: 'detached', data class: '(null)'
...
<debug> Received notification (service 'basic-connect', command 'register-state')
<info>  Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (home -> unknown)
<debug> Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP location updated (MCC: '0', MNC: '0', Location area code: '0', Cell ID: '0')

Are you able to try the same SIM in another device with the same APN
and see if it works?  Does your provider require user/pass
authentication at all?

Dan