lsusb查不到4g模组

[U帮tu]

设备使用的是EC600U的4g模组，同样是ubuntu2004server版本，以前同事配置好的系统镜像安装lsusb是可以查看到2c7c这个usb设备的。但是我重新下载安装了ubuntu2004server后lsusb就是查找不到4g模组。对于usb设备时需要做什么配置吗？有遇到同样能问题的吗？

[onlylove]

所以现在lsusb是什么输出呢？如果有一个usb光驱的话，可以用usbmodeswitch之类的

[astolia]

如果插不插入usb口，lsusb的输出都没变化。你可以检查
1、usb口是否坏了
2、模块是否坏了
3、模块是否要插入sim卡才能工作

[U帮tu]

所以现在lsusb是什么输出呢？如果有一个usb光驱的话，可以用usbmodeswitch之类的

现在的输出1：
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0a2a Intel Corp. Bluetooth wireless interface
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 004: ID 1a86:55d5 QinHeng Electronics USB Quad_Serial
Bus 001 Device 005: ID 1c4f:0002 SiGma Micro Keyboard TRACER Gamma Ivory
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

正常输出2：
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 2c7c:0901 Quectel Wireless Solutions Co., Ltd. Android
Bus 001 Device 009: ID 2c7c:0901 Quectel Wireless Solutions Co., Ltd. Android
Bus 001 Device 004: ID 1a86:55d5 QinHeng Electronics USB Quad_Serial
Bus 001 Device 005: ID 1c4f:0002 SiGma Micro Keyboard TRACER Gamma Ivory
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 002: ID 8087:0a2a Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
输出1和2设备使用同一台设备，区别在于输出1是使用的原始的ubuntu server（官网下载的），输出2使用的是同事配置过的ubuntu server
可以比较出硬件应该是没问题的，只是系统不同

[onlylove]

dmesg输出呢？这怎么看起来像没识别到硬件？

不过你看看试试吧
https://github.com/QuecPython/Quectel_L ... ADME-zh.md

[U帮tu]

dmesg输出呢？这怎么看起来像没识别到硬件？

不过你看看试试吧
https://github.com/QuecPython/Quectel_L ... ADME-zh.md

是的，就是没识别到硬件，不知道该怎么搞。装个新镜像就识别不到。就是不知道原来同事镜像怎么制作的了。问了移远技术支持说正常是直接可以识别到硬件
dmesg输出：
[ 1.083512] usbcore: registered new interface driver usbfs
[ 1.083512] usbcore: registered new interface driver hub
[ 1.083512] usbcore: registered new device driver usb
[ 2.093514] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.08
[ 2.093907] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.094257] usb usb1: Product: xHCI Host Controller
[ 2.094610] usb usb1: Manufacturer: Linux 6.8.0-35-generic xhci-hcd
[ 2.094958] usb usb1: SerialNumber: 0000:00:15.0
[ 2.103979] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.08
[ 2.104418] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.104818] usb usb2: Product: xHCI Host Controller
[ 2.105208] usb usb2: Manufacturer: Linux 6.8.0-35-generic xhci-hcd
[ 2.105603] usb usb2: SerialNumber: 0000:00:15.0
[ 2.342788] usb 1-2: new full-speed USB device number 2 using xhci_hcd
[ 2.474758] usb 1-2: New USB device found, idVendor=8087, idProduct=0a2a, bcdDevice= 0.01
[ 2.475911] usb 1-2: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2.595781] usb 1-4: new high-speed USB device number 3 using xhci_hcd
[ 2.727529] usb 1-4: New USB device found, idVendor=05e3, idProduct=0608, bcdDevice=60.90
[ 2.728688] usb 1-4: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 2.729795] usb 1-4: Product: USB2.0 Hub
[ 2.856797] usb 1-5: new high-speed USB device number 4 using xhci_hcd
[ 2.986821] usb 1-5: New USB device found, idVendor=1a86, idProduct=55d5, bcdDevice=80.46
[ 2.987953] usb 1-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.989005] usb 1-5: Product: USB Quad_Serial
[ 2.990040] usb 1-5: Manufacturer: wch.cn
[ 2.991054] usb 1-5: SerialNumber: 0123456789
[ 3.050819] usb 1-4.3: new low-speed USB device number 5 using xhci_hcd
[ 3.138837] usb 1-4.3: New USB device found, idVendor=1c4f, idProduct=0002, bcdDevice= 1.50
[ 3.139949] usb 1-4.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 3.141009] usb 1-4.3: Product: USB Keyboard
[ 3.142041] usb 1-4.3: Manufacturer: SIGMACHIP
[ 3.600147] usbcore: registered new interface driver usbhid
[ 3.600607] usbhid: USB HID core driver
[ 3.605328] input: SIGMACHIP USB Keyboard as /devices/pci0000:00/0000:00:15.0/usb1/1-4/1-4.3/1-4.3:1.0/0003:1C4F:0002.0001/input/input3
[ 3.657779] hid-generic 0003:1C4F:0002.0001: input,hidraw0: USB HID v1.10 Keyboard [SIGMACHIP USB Keyboard] on us-0000:00:15.0-4.3/input0
[ 3.660175] input: SIGMACHIP USB Keyboard Consumer Control as /devices/pci0000:00/0000:00:15.0/usb1/1-4/1-4.3/1-4.3:1.1/0003:1C4F:0002.0002/input/input4
[ 3.713159] input: SIGMACHIP USB Keyboard System Control as /devices/pci0000:00/0000:00:15.0/usb1/1-4/1-4.3/1-4.3:1.1/0003:1C4F:0002.0002/input/input5
[ 3.714427] hid-generic 0003:1C4F:0002.0002: input,hidraw1: USB HID v1.10 Device [SIGMACHIP USB Keyboard] on usb-0000:00:15.0-4.3/input1
[ 5.364807] usb_ch343 1-5:1.0: ttyCH343USB0: usb to uart device
[ 5.368826] usb_ch343 1-5:1.0: USB to GPIO device now attached to ch343_iodev0
[ 5.369051] usb_ch343 1-5:1.2: ttyCH343USB1: usb to uart device
[ 5.375672] usb_ch343 1-5:1.4: ttyCH343USB2: usb to uart device
[ 5.377108] usb_ch343 1-5:1.6: ttyCH343USB3: usb to uart device
[ 5.382772] usbcore: registered new interface driver usb_ch343
[ 7.996028] usbcore: registered new interface driver cdc_acm
[ 8.263946] usbcore: registered new interface driver btusb
就是没有识别到硬件

[U帮tu]

dmesg输出呢？这怎么看起来像没识别到硬件？

不过你看看试试吧
https://github.com/QuecPython/Quectel_L ... ADME-zh.md

不知道为什么原来的系统怎么配置的就可以识别到硬件。即使我从官网下载同版本的系统也是识别不到。

[onlylove]

是同一台电脑吗，要不要换个usb口试下，或者试下新版本系统比方2404看看

[astolia]

用udevadm monitor命令后，再插入模块，看输出

不知道为什么原来的系统怎么配置的就可以识别到硬件。即使我从官网下载同版本的系统也是识别不到。

“识别到有一个usb设备接入“和“识别到有一个Quectel的4G模块接入”是两个不同层级的事。
前者仅依赖于usb协议通讯的正确，并不需要额外的配置。但你现在的情况是连这个都做不到，我觉得还是硬件层面的问题。