GSM连接失败-NetworkManager

问题描述

我正在尝试通过单板计算机实现gsm连接。我想我设置了一切。以下是调制解调器信息的输出：

--------------------------------
  General  |            dbus path: /org/freedesktop/ModemManager1/Modem/0
           |            device id: 10c51b4b5511adedf5c6df0380e7acab4ce64f5a
  --------------------------------
  Hardware |         manufacturer: QUALCOMM INCORPORATED
           |                model: QUECTEL Mobile Broadband Module
           |    firmware revision: EC25AUFAR06A01M4G
           |       carrier config: default
           |         h/w revision: 10000
           |            supported: gsm-umts,lte
           |              current: gsm-umts,lte
           |         equipment id: 861585041067073
  --------------------------------
  System   |               device: /sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2
           |              drivers: option1,qmi_wwan
           |               plugin: Quectel
           |         primary port: cdc-wdm0
           |                ports: ttyUSB0 (qcdm),ttyUSB2 (at),cdc-wdm0 (qmi),wwan0 (net),|                       ttyUSB3 (at)
  --------------------------------
  Numbers  |                  own: 61451690967
  --------------------------------
  Status   |       unlock retries: sim-pin (3),sim-pin2 (0),sim-puk (10),sim-puk2 (0)
           |                state: enabled
           |          power state: on
           |       signal quality: 0% (cached)
  --------------------------------
  Modes    |            supported: allowed: 2g; preferred: none
           |                       allowed: 3g; preferred: none
           |                       allowed: 4g; preferred: none
           |                       allowed: 2g,3g; preferred: 3g
           |                       allowed: 2g,3g; preferred: 2g
           |                       allowed: 2g,4g; preferred: 4g
           |                       allowed: 2g,4g; preferred: 2g
           |                       allowed: 3g,4g; preferred: 3g
           |                       allowed: 3g,3g,4g; preferred: 3g
           |                       allowed: 2g,4g; preferred: 2g
           |              current: allowed: 2g,4g; preferred: 4g
  --------------------------------
  Bands    |            supported: egsm,dcs,pcs,g850,utran-1,utran-5,utran-8,utran-2,|                       eutran-1,eutran-2,eutran-3,eutran-4,eutran-5,eutran-7,eutran-8,|                       eutran-28,eutran-40
           |              current: egsm,eutran-40
  --------------------------------
  IP       |            supported: ipv4,ipv6,ipv4v6
  --------------------------------
  3GPP     |                 imei: 861585041067073
           |         registration: idle
  --------------------------------
  3GPP EPS | ue mode of operation: csps-2
  --------------------------------
  SIM      |            dbus path: /org/freedesktop/ModemManager1/SIM/0

状态部分似乎没有信号。以及nmcli con的输出：

NAME                UUID                                  TYPE      DEVICE      
cellular            d811a35a-70fc-3716-84e1-a3578d10cc1e  gsm       cdc-wdm0    
resin-wifi-01       a58e405d-fdc2-3649-9339-5bbaea740c76  wifi      wlan0       
supervisor0         8148d985-dc90-4f8c-8e38-62f83f4f13ba  bridge    supervisor0 

有线问题是gsm始终连接（一次不连接）：

cdc-wdm0: connecting (prepare) to cellular
        "cdc-wdm0"
        gsm (option1,qmi_wwan),hw

我试图手动设置蜂窝电话：

root@6f5afca:~# nmcli c up cellular
Error: Connection activation failed: Network registration timed out

到目前为止，我已经尝试了一切。我用手机测试了SIM卡，它可以正常工作。我不知道为什么它没有连接。

解决方法

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