Параметр нужно дописать в строку запуска. Отредактирлованая выглядит как
ExecStart=/usr/sbin/ModemManager --debug
Параметр нужно дописать в строку запуска. Отредактирлованая выглядит как
ExecStart=/usr/sbin/ModemManager --debug
По куску лога на скриншоте довольно сложно понять. Надо сравнивать что в выводе dmesg, что в остальных сервисах. Пришлите пожалуйста диагностический архив, созданный после того как модем включился.
В журнале ошибок не вижу, но смс опять не отправляются
Я виду постоянную регистрацию-разрегистрацию модема.
Mar 27 12:20:01 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] mobile equipment forced PS detach: all contexts have been deactivated
Mar 27 12:20:01 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (home -> searching)
Mar 27 12:20:01 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (registered -> searching)
Mar 27 12:20:01 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (searching -> registering)
Mar 27 12:20:01 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (registering -> home)
Mar 27 12:20:01 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (searching -> registered)
Mar 27 12:20:03 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (home -> registering)
Mar 27 12:20:03 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (registering -> home)
Mar 27 12:20:06 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] mobile equipment request to activate context (cid 1)
Mar 27 12:21:08 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (home -> registering)
Mar 27 12:21:08 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (home -> idle)
Mar 27 12:21:08 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (registered -> enabled)
Mar 27 12:21:08 wirenboard-AXAUR4HV ModemManager[800]: <warn> [modem0] couldn't load operator code: Couldn't match response
Mar 27 12:21:08 wirenboard-AXAUR4HV ModemManager[800]: <warn> [modem0] couldn't load operator name: Couldn't match response
Mar 27 12:21:08 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (registering -> home)
Mar 27 12:21:08 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (enabled -> registered)
Mar 27 12:21:27 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (home -> idle)
Mar 27 12:21:27 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (registered -> enabled)
Mar 27 12:21:27 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (idle -> searching)
Mar 27 12:21:27 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (enabled -> searching)
Mar 27 12:22:18 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (searching -> idle)
Mar 27 12:22:18 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (searching -> enabled)
Mar 27 12:22:18 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] network request to deactivate context (cid 1)
Mar 27 12:22:21 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (idle -> searching)
Mar 27 12:22:21 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (enabled -> searching)
Mar 27 12:22:21 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (searching -> idle)
Mar 27 12:22:21 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (searching -> enabled)
Mar 27 12:22:26 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (idle -> registering)
Mar 27 12:22:29 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (registering -> home)
Mar 27 12:22:29 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] state changed (enabled -> registered)
Mar 27 12:22:29 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] mobile equipment request to activate context (cid 1)
Mar 27 12:23:36 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (home -> registering)
Mar 27 12:23:37 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (registering -> home)
Mar 27 12:24:06 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (home -> registering)
Mar 27 12:24:06 wirenboard-AXAUR4HV ModemManager[800]: <info> [modem0] 3GPP registration state changed (registering -> home)
Скорее всего связано с недостаточным уровнем сигнала.
Модем еще не загрузился и порта пока нет.