我正在使用 GSM 调制解调器尝试发送短信，调制解调器型号是 Ubuntu 上的 TCT Mobile X230L
Description: Ubuntu 20.04.1 LTS
Release: 20.04
Codename: focal
，调制解调器已被识别并可以在下方看到它lsusb，以下是输出：
Bus 002 Device 004: ID 058f:6366 Alcor Micro Corp. Multi Flash Reader
Bus 002 Device 010: ID 1bbb:f000 T & A Mobile Phones
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 413c:2113 Dell Computer Corp.
Bus 001 Device 003: ID 413c:301a Dell Computer Corp.
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
该设备是第二个：ID 1bbb:f000
我尝试使用日志并断开并连接调制解调器，然后得到了以下信息：
Nov 3 16:36:38 OPC kernel: [ 1180.292531] usb 2-1.4: New USB device found, idVendor=0525, idProduct=a4a5,
Nov 3 18:01:24 OPC kernel: [ 3006.970800] usb 2-1.4: new high-speed USB device number 9 using ehci-pci
Nov 3 18:01:24 OPC kernel: [ 3007.081976] usb 2-1.4: New USB device found, idVe ndor=1bbb, idProduct=f000, bcdDevice= 0.00
Nov 3 18:01:24 OPC kernel: [ 3007.081980] usb 2-1.4: New USB device strings: Mf r=3, Product=2, SerialNumber=4
Nov 3 18:01:24 OPC kernel: [ 3007.081983] usb 2-1.4: Product: HSPA Data Card
Nov 3 18:01:24 OPC kernel: [ 3007.081984] usb 2-1.4: Manufacturer: USBModem
Nov 3 18:01:24 OPC kernel: [ 3007.081986] usb 2-1.4: SerialNumber: 1234567890AB CDEF
Nov 3 18:01:24 OPC kernel: [ 3007.084822] usb-storage 2-1.4:1.0: USB Mass Stora ge device detected
Nov 3 18:01:24 OPC kernel: [ 3007.084972] scsi host6: usb-storage 2-1.4:1.0
Nov 3 18:01:24 OPC mtp-probe: checking bus 2, device 9: "/sys/devices/pci0000:0 0/0000:00:1d.0/usb2/2-1/2-1.4"
Nov 3 18:01:24 OPC mtp-probe: bus: 2, device: 9 was not an MTP device
Nov 3 18:01:25 OPC systemd[1]: Starting USB_ModeSwitch_2-1.4...
Nov 3 18:01:25 OPC usb_modeswitch_dispatcher[5843]: Could not read attribute: N o such file or directory
Nov 3 18:01:25 OPC usb_modeswitch_dispatcher[5843]: message repeated 2 times: [ Could not read attribute: No such file or directory]
Nov 3 18:01:25 OPC systemd[1]: [email protected]: Main process exite d, code=exited, status=1/FAILURE
Nov 3 18:01:25 OPC systemd[1]: [email protected]: Failed with result 'exit-code'.
Nov 3 18:01:25 OPC systemd[1]: Failed to start USB_ModeSwitch_2-1.4.
Nov 3 18:01:25 OPC mtp-probe: checking bus 2, device 9: "/sys/devices/pci0000:0 0/0000:00:1d.0/usb2/2-1/2-1.4"
Nov 3 18:01:25 OPC mtp-probe: bus: 2, device: 9 was not an MTP device
Nov 3 18:01:25 OPC kernel: [ 3008.089497] scsi 6:0:0:0: Direct-Access ALCAT EL Mass Storage 2.31 PQ: 0 ANSI: 2
Nov 3 18:01:25 OPC kernel: [ 3008.090481] scsi 6:0:0:1: CD-ROM ALCAT EL Mass Storage 2.31 PQ: 0 ANSI: 2
Nov 3 18:01:25 OPC kernel: [ 3008.090890] sd 6:0:0:0: Attached scsi generic sg1 type 0
Nov 3 18:01:25 OPC kernel: [ 3008.094473] sr 6:0:0:1: [sr0] scsi-1 drive
Nov 3 18:01:26 OPC kernel: [ 3008.111101] sr 6:0:0:1: Attached scsi CD-ROM sr0
Nov 3 18:01:26 OPC kernel: [ 3008.111260] sr 6:0:0:1: Attached scsi generic sg2 type 5
Nov 3 18:01:26 OPC kernel: [ 3008.112084] sd 6:0:0:0: [sdb] Attached SCSI remov able disk
Nov 3 18:01:26 OPC kernel: [ 3008.323650] ISO 9660 Extensions: Microsoft Joliet Level 1
Nov 3 18:01:26 OPC kernel: [ 3008.323673] ISOFS: changing to secondary root
Nov 3 18:01:26 OPC systemd[1]: Finished Clean the /media/root/Quick net mount p oint.
Nov 3 18:01:26 OPC udisksd[688]: Mounted /dev/sr0 at /media/root/Quick net on b ehalf of uid 0
Nov 3 18:01:56 OPC tracker-store[5821]: OK
Nov 3 18:01:56 OPC systemd[1410]: tracker-store.service: Succeeded.
输出dmesg：
[ 3007.084972] scsi host6: usb-storage 2-1.4:1.0
[ 3008.089497] scsi 6:0:0:0: Direct-Access ALCATEL Mass Storage 2.31 PQ: 0 ANSI: 2
[ 3008.090481] scsi 6:0:0:1: CD-ROM ALCATEL Mass Storage 2.31 PQ: 0 ANSI: 2
[ 3008.090890] sd 6:0:0:0: Attached scsi generic sg1 type 0
[ 3008.094473] sr 6:0:0:1: [sr0] scsi-1 drive
[ 3008.111101] sr 6:0:0:1: Attached scsi CD-ROM sr0
[ 3008.111260] sr 6:0:0:1: Attached scsi generic sg2 type 5
[ 3008.112084] sd 6:0:0:0: [sdb] Attached SCSI removable disk
[ 3008.323650] ISO 9660 Extensions: Microsoft Joliet Level 1
[ 3008.323673] ISOFS: changing to secondary root
以下是 usb_modeswitch 的输出：
Look for target devices ...
Found devices in target mode or class (1)
Look for default devices ...
Found devices in default mode (1)
Access device 009 on bus 002
Get the current device configuration ...
Current configuration number is 1
Use interface number 0
with class 8
Use endpoints 0x01 (out) and 0x81 (in)
Looking for active drivers ...
OK, driver detached
Set up interface 0
Use endpoint 0x01 for message sending ...
Trying to send message 1 to endpoint 0x01 ...
OK, message successfully sent
Read the response to message 1 (CSW) ...
Response successfully read (13 bytes), status 1
Reset response endpoint 0x81
Reset message endpoint 0x01
-> Run lsusb to note any changes. Bye!
但看不到，ttyUSB这里是输出：
[ 0.077109] printk: console [tty0] enabled
这可能是什么问题？
很抱歉，我尝试了所有这些日志，但都找不到解决方案！