<div dir="ltr"><div>Hi all, I am relatively new to this, so please excuse silly mistakes. I have a PCEngines APU2, and a EC21-J LTE modem and a sim card. I am trying to connect to the network. In case it is relevant, i'm in Japan. The following explains in more details, but bascically i am not able to connect to the network. I don't know why, and i don't know how to go about debugging. Any and all help appreciated. I removed the phone numbers and passwords... I can see the modem and the sim card is being read: $ sudo mmcli -m 1 -------------------------------- General | dbus path: /org/freedesktop/ModemManager1/Modem/1 | device id: b0f974be664b5de29807bacd72562cec57bc102a -------------------------------- Hardware | manufacturer: QUALCOMM INCORPORATED | model: QUECTEL Mobile Broadband Module | revision: EC21JFAR06A02M4G | h/w revision: 10000 | supported: lte | current: lte | equipment id: 866522040026011 -------------------------------- System | device: /sys/devices/pci0000:00/0000:00:13.0/usb1/1-1/1-1.3 | drivers: option1, qmi_wwan | plugin: Quectel | primary port: cdc-wdm0 | ports: ttyUSB0 (qcdm), ttyUSB2 (at), cdc-wdm0 (qmi), | wwp0s19u1u3i4 (net), ttyUSB3 (at) -------------------------------- Numbers | own: ************ -------------------------------- Status | lock: sim-pin2 | unlock retries: sim-pin (3), sim-pin2 (3), sim-puk (10), sim-puk2 (10) | state: enabled | power state: on | signal quality: 0% (cached) -------------------------------- Modes | supported: allowed: 4g; preferred: none | current: allowed: 4g; preferred: none -------------------------------- Bands | supported: eutran-1, eutran-3, eutran-8, eutran-18, eutran-19 | current: eutran-1, eutran-3, eutran-8, eutran-18, eutran-19 -------------------------------- IP | supported: ipv4, ipv6, ipv4v6 -------------------------------- 3GPP | imei: 866522040026011 -------------------------------- 3GPP EPS | ue mode of operation: csps-2 -------------------------------- SIM | dbus path: /org/freedesktop/ModemManager1/SIM/1 Also, i can scan for networks # qmicli --device /dev/cdc-wdm0 --nas-network-scan [/dev/cdc-wdm0] Successfully scanned networks Network [0]: MCC: '440' MNC: '10' Status: 'available, home, not-forbidden, preferred' Description: 'DOCOMO' Network [1]: MCC: '440' MNC: '52' Status: 'available, roaming, forbidden, not-preferred' Description: '440 52' Network [2]: MCC: '440' MNC: '50' Status: 'available, roaming, forbidden, not-preferred' Description: 'KDDI' Network [3]: MCC: '440' MNC: '51' Status: 'available, roaming, forbidden, not-preferred' Description: 'KDDI' Network [4]: MCC: '440' MNC: '20' Status: 'current-serving, roaming, forbidden, not-preferred' Description: 'SoftBank' Network [0]: MCC: '440' MNC: '10' RAT: 'lte' Network [1]: MCC: '440' MNC: '52' RAT: 'lte' Network [2]: MCC: '440' MNC: '50' RAT: 'lte' Network [3]: MCC: '440' MNC: '51' RAT: 'lte' Network [4]: MCC: '440' MNC: '20' RAT: 'lte' Network [0]: MCC: '440' MNC: '10' MCC with PCS digit: 'no' Network [1]: MCC: '440' MNC: '52' MCC with PCS digit: 'no' Network [2]: MCC: '440' MNC: '50' MCC with PCS digit: 'no' Network [3]: MCC: '440' MNC: '51' MCC with PCS digit: 'no' Network [4]: MCC: '440' MNC: '20' MCC with PCS digit: 'no' When i try to connect i get the following: # qmi-network /dev/cdc-wdm0 start Loading profile at /etc/qmi-network.conf... APN: **** APN user: **** APN password: **** qmi-proxy: no Checking data format with 'qmicli -d /dev/cdc-wdm0 --wda-get-data-format '... Device link layer protocol retrieved: raw-ip Getting expected data format with 'qmicli -d /dev/cdc-wdm0 --get-expected-data-format'... Expected link layer protocol retrieved: raw-ip Device and kernel link layer protocol match: raw-ip Starting network with 'qmicli -d /dev/cdc-wdm0 --wds-start-network=apn='***' --client-no-release-cid '... error: couldn't start network: QMI protocol error (14): 'CallFailed' call end reason (3): generic-no-service verbose call end reason (3,2001): [cm] no-service Saving state at /tmp/qmi-network-state-cdc-wdm0... (CID: 20) error: network start failed, no packet data handle Clearing state at /tmp/qmi-network-state-cdc-wdm0... </div></div>