嗨！我在最后一步遇到了错误。我使用的是 Micromax MMX 355g 3G 调制解调器 HSPA 7.2mbps。配置将非常困难，驱动程序的检测也非常困难。我刚刚执行了上述步骤，直到modprobe语句和最后语句都没有问题：usb_modeswitch -c /etc/usb_modeswitch.d/1dbc:0669。我得到的错误是未找到驱动程序，但找到了 USB 存储驱动程序，也找到了产品 ID：
Looking for target devices ...
found matching product ID
adding device
Found devices in target mode or class (1)
Looking for default devices ...
found matching product ID
adding device
Found device in default mode, class or configuration (1)
Accessing device 006 on bus 001 ...
Getting the current device configuration ...
OK, got current device configuration (1)
Using first interface: 0x00
Using endpoints 0x01 (out) and 0x87 (in)
Inquiring device details; driver will be detached ...
Looking for active driver ...
OK, driver found ("usb-storage")
OK, driver "usb-storage" detached
Could not send INQUIRY message (error -2)
USB description data (for identification)
-------------------------
Manufacturer: HSPA
Product: HSPA
Serial No.: 8444311594054030
-------------------------
Looking for active driver ...
No driver found. Either detached before or never attached
Setting up communication with interface 0
Using endpoint 0x01 for message sending ...
Trying to send message 1 to endpoint 0x01 ...
Sending the message returned error -2. Trying to continue
Resetting response endpoint 0x87
Resetting message endpoint 0x01
Could not reset endpoint (probably harmless): -2
-> Run lsusb to note any changes. Bye.
答案1
按Ctrl++打开Alt终端T并写入以下代码：-
sudo gedit /etc/modules
按enter
它会要求您输入密码，输入后按enter
然后写下这些行
usbserial按enter
option按enter
保存文件并关闭gedit。
现在重新启动系统。
之后按Ctrl+ Alt+打开终端T并写入
sudo modprobe usbserialenter，
输入你的密码，按enter然后输入
sudo modprobe option按enter。
- 关闭终端。
- 现在将您的调制解调器与 USB 端口连接。
- 等待几秒钟，就完成了。