ublox SARA-U260 not showing up in mmcli

[Aleksander Morgado]

On Sat, May 6, 2017 at 6:58 AM, Brent Sink <brents_3 at hotmail.com> wrote:
>> Oh, that's weird. Which serial port settings are you using when
>
>> opening the TTY on minicom?
>
> I'm using 115200 8N1
>
>> Could you get ModemManager debug logs as well to see where/how the
>> port probing fails?
>> https://www.freedesktop.org/wiki/Software/ModemManager/Debugging/
>
> Here is where ModemManager seems to fail.  It looks like it sends "AT", but
> never gets a response.  I does properly select the ublox plugin though.
>
> ModemManager[705]: <debug> [1494042020.639634] [mm-port-serial.c:1114]
> mm_port_serial_open(): (ttyACM0) opening serial port...
> ModemManager[705]: <debug> [1494042020.641101] [mm-port-serial.c:415]
> real_config_fd(): (ttyACM0): setting up baudrate: 57600
> ModemManager[705]: <debug> [1494042020.641367] [mm-port-serial.c:1244]
> mm_port_serial_open(): (ttyACM0) device open count is 1 (open)
> ModemManager[705]: <debug> [1494042020.642450] [mm-port-serial.c:393]
> internal_tcsetattr(): (ttyACM0): port attributes not fully set
> ModemManager[705]: <debug> [1494042020.645462] [mm-port-serial-at.c:459]
> debug_log(): (ttyACM3): --> 'AT<CR>'
> ModemManager[705]: <debug> [1494042020.645737] [mm-port-serial-at.c:459]
> debug_log(): (ttyACM2): --> 'AT<CR>'
> ModemManager[705]: <debug> [1494042020.740322] [mm-port-serial-at.c:459]
> debug_log(): (ttyACM1): --> 'AT<CR>'
> ModemManager[705]: <debug> [1494042020.744884] [mm-port-serial-at.c:459]
> debug_log(): (ttyACM0): --> 'AT<CR>'
> ModemManager[705]: <debug> [1494042027.618007] [mm-port-probe-at.c:43]
> mm_port_probe_response_processor_is_at(): Parsing AT got: 'Serial command
> timed out'
> ModemManager[705]: <debug> [1494042027.618729] [mm-port-probe-at.c:43]
> mm_port_probe_response_processor_is_at(): Parsing AT got: 'Serial command
> timed out'
>
> Any thoughts?

I believe you first have to make the TTY reply correctly via a generic
way, e.g. minicom, before we can do or suggest anything at the
ModemManager level :/

Was this modem used/configured by any other program before? Maybe it
requires parity settings in the serial port (you could try this with
minicom)? Being a USB modem, not sure if all this makes much sense,
but may be worth a try...

-- 
Aleksander
https://aleksander.es