Using the Fibocom L830-EB in ArchLinux on a ThinkPad T480s

I want to have mobile broadband on my T480s. First I ordered the L850-GL which didn't work because it uses the PCI interface. As you can see in this forum. People in the same thread claim to have a working L830-EB on their devices and in this (german) forum someone has managed to use the same module with Kubuntu. I could successfully use the module in a Windows 10 VM. This and the fact that I could not find a "Lenovo Activation App" for my system lets me assume that the activation is successful or not necessary. I tried following this guide but the result is: $ sudo ./qmi_setup.sh start error: couldn't open the QmiDevice: Operation timed out: device is closed your wwan device may be RFKilled? The censored output of mmcli is: $ mmcli -m 0 -------------------------------- General | dbus path: /org/freedesktop/ModemManager1/Modem/0 | device id: 8f2545cc6e144c03ae986f13ea3a5ed42b03ecfd -------------------------------- Hardware | manufacturer: FIBOCOM | model: L830-EB-00 | revision: 18300.1002.00.01.01.11 | h/w revision: L830-EB-02 v1.0.1 | supported: gsm-umts, lte | current: gsm-umts, lte | equipment id: XXXXXXXXX -------------------------------- System | device: /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6 | drivers: cdc_acm, cdc_mbim | plugin: Fibocom | primary port: cdc-wdm0 | ports: cdc-wdm0 (mbim), ttyACM0 (at), wwp0s20f0u6 (net) -------------------------------- Numbers | own: XXXXXXXX -------------------------------- Status | unlock retries: sim-pin (3) | state: registered | power state: on | access tech: lte | signal quality: 12% (recent) -------------------------------- Modes | supported: allowed: 3g; preferred: none | allowed: 4g; preferred: none | allowed: 3g, 4g; preferred: none | allowed: 3g, 4g; preferred: 3g | allowed: 3g, 4g; preferred: 4g | current: allowed: 3g, 4g; preferred: 4g -------------------------------- Bands | supported: utran-1, utran-5, utran-8, eutran-1, eutran-3, eutran-5, | eutran-7, eutran-8, eutran-20, eutran-28 | current: utran-1, utran-5, utran-8, eutran-1, eutran-3, eutran-5, | eutran-7, eutran-8, eutran-20, eutran-28 -------------------------------- IP | supported: ipv4, ipv6, ipv4v6 -------------------------------- 3GPP | imei: XXXXXX | enabled locks: sim | operator id: 26202 | operator name: Vodafone.de | registration: home -------------------------------- 3GPP EPS | ue mode of operation: csps-2 -------------------------------- SIM | dbus path: /org/freedesktop/ModemManager1/SIM/0 When the desktop environment starts I get asked for the SIM pin. When I want to choose a Network in NetworkManager the only option is to "Add a new connection". When I choose this option the NetworkManager window closes. I don't know what else to check now. Can you please give me some pointers? **Update:** Checking the status of ModemManager reveals that the device is not supported. I wonder how the other people managed to connect... Apr 09 18:31:55 tinkerpad ModemManager: Couldn't check support for device '/sys/devices/pci0000:00/0000:00:14.0/usb2/2-2/2-2.3': not supported by any plugin Apr 09 18:31:55 tinkerpad ModemManager: Couldn't check support for device '/sys/devices/pci0000:00/0000:00:1c.6/0000:3d:00.0': not supported by any plugin Apr 09 18:31:55 tinkerpad ModemManager: Couldn't check support for device '/sys/devices/pci0000:00/0000:00:1f.6': not supported by any plugin Apr 09 18:31:55 tinkerpad ModemManager: opening device... Apr 09 18:31:55 tinkerpad ModemManager: [/dev/cdc-wdm0] Read max control message size from descriptors file: 512 Apr 09 18:31:55 tinkerpad ModemManager: [/dev/cdc-wdm0] channel destroyed Apr 09 18:31:56 tinkerpad ModemManager: [device /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6] creating modem with plugin 'Fibocom' and '3' ports Apr 09 18:31:56 tinkerpad ModemManager: Modem for device '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-6' successfully created Apr 09 18:31:56 tinkerpad ModemManager: opening device... Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] Read max control message size from descriptors file: 512 Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] Opening device with flags 'version-info, proxy, mbim, expect-indications'... Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] loaded driver of cdc-wdm port: cdc_mbim Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] creating MBIM device... Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] MBIM device created Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] opening MBIM device... Apr 09 18:31:56 tinkerpad ModemManager: opening device... Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] Read max control message size from descriptors file: 512 Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] MBIM device open Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] Checking version info (15 retries)... Apr 09 18:31:56 tinkerpad ModemManager: [/dev/cdc-wdm0] sending message as MBIM... Apr 09 18:31:57 tinkerpad ModemManager: [cdc-wdm0] MBIM device is not QMI capable Apr 09 18:31:57 tinkerpad ModemManager: [/dev/cdc-wdm0] MBIM device wasn't explicitly closed Apr 09 18:31:57 tinkerpad ModemManager: [/dev/cdc-wdm0] channel destroyed Apr 09 18:31:57 tinkerpad ModemManager: Unexpected band value: 1-2 Apr 09 18:31:58 tinkerpad ModemManager: Modem: state changed (unknown -> locked) Apr 09 18:31:58 tinkerpad ModemManager: couldn't load Operator identifier: 'PinRequired' Apr 09 18:31:58 tinkerpad ModemManager: couldn't load Operator name: 'PinRequired' Apr 09 18:32:10 tinkerpad ModemManager: Modem /org/freedesktop/ModemManager1/Modem/1: state changed (locked -> initializing) Apr 09 18:32:21 tinkerpad ModemManager: couldn't load initial EPS bearer settings: 'Transaction timed out' Apr 09 18:32:21 tinkerpad ModemManager: couldn't load SUPL server: 'Operation not supported' Apr 09 18:32:21 tinkerpad ModemManager: Modem /org/freedesktop/ModemManager1/Modem/1: state changed (initializing -> disabled) Apr 09 18:32:21 tinkerpad ModemManager: Modem /org/freedesktop/ModemManager1/Modem/1: state changed (disabled -> enabling) Apr 09 18:32:31 tinkerpad ModemManager: Modem /org/freedesktop/ModemManager1/Modem/1: state changed (enabling -> enabled) Apr 09 18:32:31 tinkerpad ModemManager: Modem /org/freedesktop/ModemManager1/Modem/1: 3GPP Registration state changed (unknown -> registering) Apr 09 18:32:31 tinkerpad ModemManager: Modem /org/freedesktop/ModemManager1/Modem/1: 3GPP Registration state changed (registering -> home) Apr 09 18:32:31 tinkerpad ModemManager: Modem /org/freedesktop/ModemManager1/Modem/1: state changed (enabled -> registered)