root@fornost:~# /usr/sbin/ModemManager 
ModemManager[30864]: <info>  ModemManager (version 1.4.4) starting in system bus...
ModemManager[30864]: <warn>  Couldn't find support for device at '/sys/devices/pci0000:00/0000:00:1c.2/0000:05:00.0': not supported by any plugin
ModemManager[30864]: <warn>  Couldn't find support for device at '/sys/devices/pci0000:00/0000:00:1c.5/0000:04:00.0': not supported by any plugin
ModemManager[30864]: <warn>  (ttyUSB1): port attributes not fully set
ModemManager[30864]: <warn>  (ttyUSB2): port attributes not fully set
ModemManager[30864]: <warn>  (ttyUSB0): port attributes not fully set
ModemManager[30864]: <warn>  (ttyUSB1): port attributes not fully set
ModemManager[30864]: <warn>  (ttyUSB2): port attributes not fully set
ModemManager[30864]: <info>  Creating modem with plugin 'Huawei' and '3' ports
ModemManager[30864]: <warn>  (ttyUSB2): port attributes not fully set
ModemManager[30864]: <info>  Modem for device at '/sys/devices/pci0000:00/0000:00:1a.7/usb7/7-5/7-5.2' successfully created
ModemManager[30864]: Error while checking ^SYSCFGEX format: Unknown error
ModemManager[30864]: <warn>  couldn't load Supported IP families: 'SIM PIN required'
ModemManager[30864]: <info>  Modem: state changed (unknown -> locked)
ModemManager[30864]: <warn>  couldn't load SIM identifier: 'SIM PIN required'
ModemManager[30864]: <warn>  couldn't load IMSI: 'SIM PIN required'
ModemManager[30864]: <warn>  couldn't load Operator identifier: 'SIM PIN required'
ModemManager[30864]: <warn>  couldn't load Operator name: 'SIM PIN required'
ModemManager[30864]: <warn>  couldn't load list of Own Numbers: 'Failed to parse NV MDN command result: -17'
ModemManager[30864]: <warn>  (ttyUSB2): port attributes not fully set
ModemManager[30864]: <warn>  (ttyUSB2): port attributes not fully set
ModemManager[30864]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (locked -> initializing)
ModemManager[30864]: <warn>  (ttyUSB2): port attributes not fully set
ModemManager[30864]: <warn>  couldn't load list of Own Numbers: 'Failed to parse NV MDN command result: -17'
ModemManager[30864]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (initializing -> disabled)
ModemManager[30864]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (disabled -> enabling)
ModemManager[30864]: <warn>  (ttyUSB2): port attributes not fully set
ModemManager[30864]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (unknown -> denied)
ModemManager[30864]: <info>  Modem /org/freedesktop/ModemManager1/Modem/0: state changed (enabling -> enabled)