Hello, In our case we have switched the modem to mbim mode to be able to receive / be aware of sim removal notifications.
Are QMI WDS indications still received when modem is in MBIM mode? Regards, Alejandro El mié., 27 ene. 2021 9:02, Aleksander Morgado <aleksan...@aleksander.es> escribió: > Hey, > > > I am finding a unexpected behaviour and I would like to know how does > the ModemManager work in situations like this one, when the modem has no > signal at all or the signal is quite poor: > > > > <debug> [1607682864.814360] Received notification (service > 'basic-connect', command 'signal-state') > > <debug> [1607682864.814379] Signal state indication: 6 --> 19% > > <debug> [1607682864.814532] Modem > /org/freedesktop/ModemManager1/Modem/0: signal quality updated (19) > > <debug> [1607682866.172436] (ttyACM1): --> 7e 00 78 f0 7e > > <debug> [1607682866.172535] (ttyACM0): --> 7e 00 78 f0 7e > > [/dev/cdc-wdm0] Received message... > > >>>>>> RAW: > > >>>>>> length = 64 > > >>>>>> data = > 07:00:00:80:40:00:00:00:00:00:00:00:01:00:00:00:00:00:00:00:A2:89:CC:33:BC:BB:8B:4F:B6:B0:13:3E:C2:AA:E6:DF:0B:00:00:00:14:00:00:00:00:00:00:00:63:00:00:00:05:00:00:00:02:00:00:00:FF:FF:FF:FF > > [/dev/cdc-wdm0] Received message (translated)... > > >>>>>> Header: > > >>>>>> length = 64 > > >>>>>> type = indicate-status (0x80000007) > > >>>>>> transaction = 0 > > >>>>>> Fragment header: > > >>>>>> total = 1 > > >>>>>> current = 0 > > >>>>>> Contents: > > >>>>>> service = 'basic-connect' (a289cc33-bcbb-8b4f-b6b0-133ec2aae6df) > > >>>>>> cid = 'signal-state' (0x0000000b) > > >>>>>> Fields: > > >>>>>> Rssi = '0' > > >>>>>> ErrorRate = '99' > > >>>>>> SignalStrengthInterval = '5' > > >>>>>> RssiThreshold = '2' > > >>>>>> ErrorRateThreshold = '4294967295' > > <debug> [1607682867.822380] Received notification (service > 'basic-connect', command 'signal-state') > > <debug> [1607682867.822400] Signal state indication: 0 --> 0% > > <debug> [1607682867.822557] Modem > /org/freedesktop/ModemManager1/Modem/0: signal quality updated (0) > > > > > > - The modem does not seem to transition from the "connected" state to > the "registered" state , or at least I cannot see it in the logs (attached > in a previous mail). It remains as state: connected. > > What is the expected behaviour here? > > - What does the ModemManager do in these cases where the modem is > connected to the ISP but has really really low signal (i.e. signal state > 0) ? When does the Modem Manager consider the modem disconnected ? > > > > There's really not much magic done by MM in this case, we just wait > for the modem to tell us it's disconnected via QMI WDS indications ... > > -- > Aleksander > https://aleksander.es >
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