ModemManager CLI

Tengo un Lenovo t460s que viene con el Sierra Wireless EM7455 Qualcomm Snapdragon X7 LTE-A.
Este funciona genial en windows, pero yo, usuario de ubuntu, me cuentro que necesita de un paquete magico que lo haga arrancar.

Hasta ubuntu 18.04 no lo he conseguido, ya que habia un fallo en el Kernel, que lo impedia:
ThinkPad X1 Yoga: LTE Sierra EM7455 on Linux Ubuntu 16.04 - Lenovo Community

Y aqui el patch directo:
kernel/git/torvalds/linux.git - Linux kernel source tree

Ahora, puedo decir que despues de actualizar a Ubuntu 18.04.01, funciona OOTB.
Pero, aqui voy a dejar unos comandos del ModemManager para que podais controlarlo

Comandos MMCLI

Listar modems

mmcli -L

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Found 1 modems:
	/org/freedesktop/ModemManager1/Modem/0 [Sierra] MBIM [1199:9079]

Informacion del modem

mmcli -m 0

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/org/freedesktop/ModemManager1/Modem/0 (device id '674e82d3e20869518c2d0bbbecd0c26d67d9b58b')
  -------------------------
  Hardware |   manufacturer: 'Sierra'
           |          model: 'MBIM [1199:9079]'
           |       revision: 'SWI9X30C_02.24.05.06'
           |      supported: 'gsm-umts, lte'
           |        current: 'gsm-umts, lte'
           |   equipment id: '014582002241199'
  -------------------------
  System   |         device: '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-2'
           |        drivers: 'cdc_mbim'
           |         plugin: 'Sierra'
           |   primary port: 'cdc-wdm1'
           |          ports: 'cdc-wdm1 (mbim), wwp0s20f0u2i12 (net)'
  -------------------------
  Numbers  |           own : 'unknown'
  -------------------------
  Status   |           lock: 'none'
           | unlock retries: 'sim-pin2 (3)'
           |          state: 'registered'
           |    power state: 'on'
           |    access tech: 'lte'
           | signal quality: '48' (recent)
  -------------------------
  Modes    |      supported: 'allowed: 3g, 4g; preferred: none'
           |        current: 'allowed: 3g, 4g; preferred: none'
  -------------------------
  Bands    |      supported: 'unknown'
           |        current: 'unknown'
  -------------------------
  IP       |      supported: 'ipv4, ipv6, ipv4v6'
  -------------------------
  3GPP     |           imei: '<REDACTADO>'
           |  enabled locks: 'fixed-dialing'
           |    operator id: '21407'
           |  operator name: 'O2'
           |   subscription: 'unknown'
           |   registration: 'home'
  -------------------------
  SIM      |           path: '/org/freedesktop/ModemManager1/SIM/0'

  -------------------------
  Bearers  |          paths: '/org/freedesktop/ModemManager1/Bearer/1

Quitar PIN

mmcli --pin=<REDACTADO> --disable-pin -i 0

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successfully disabled PIN code request in the SIM

Listar todos los comandos

mmcli -m 0 --help

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Usage:
  mmcli [OPTION…] - Control and monitor the ModemManager

Help Options:
  -h, --help                                                  Show help options
  --help-all                                                  Show all help options
  --help-manager                                              Show manager options
  --help-common                                               Show common options
  --help-modem                                                Show modem options
  --help-3gpp                                                 Show 3GPP related options
  --help-cdma                                                 Show CDMA related options
  --help-simple                                               Show Simple options
  --help-location                                             Show Location options
  --help-messaging                                            Show Messaging options
  --help-voice                                                Show Voice options
  --help-time                                                 Show Time options
  --help-firmware                                             Show Firmware options
  --help-signal                                               Show Signal options
  --help-oma                                                  Show OMA options
  --help-sim                                                  Show SIM options
  --help-bearer                                               Show bearer options
  --help-sms                                                  Show SMS options
  --help-call                                                 Show call options

Application Options:
  -v, --verbose                                               Run action with verbose logs
  -V, --version                                               Print version
  -a, --async                                                 Use asynchronous methods
  --timeout=[SECONDS]                                         Timeout for the operation

Conclusion

Yo era usuario del usb-modeswitch y eso era antidiluviano, conectandome al modem y mandando comandos AT. Esto si es es facil y efectivo.

Aunque, tengo en mente montar una Raspberry Pi 3B+ en mi coche como media center con 3G y Wifi (ya que tengo pantalla del nevegador conectado a antena de TDT) y ahi tendre que volver a usarlo :/

Saludos

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