Able to attach USB device but WSL distribution cannot see serial port?

[Jibun-no-Kage]

I was able to attached the USB device to WSL just fine...

PS C:\Users\jibun> usbipd list
Connected:
BUSID  VID:PID    DEVICE                                                        STATE
2-2    1a86:7523  USB-SERIAL CH340 (COM7)                         Attached

# lsusb
Bus 001 Device 002: ID 1a86:7523 QinHeng Electronics CH340 serial converter

In WSL distirbution is this right?

# dmesg
[   96.639128] vhci_hcd vhci_hcd.0: pdev(0) rhport(0) sockfd(3)
[   96.639710] vhci_hcd vhci_hcd.0: devid(131074) speed(2) speed_str(full-speed)
[   96.640077] vhci_hcd vhci_hcd.0: Device attached
[   96.910447] vhci_hcd: vhci_device speed not set
[   96.980600] usb 1-1: new full-speed USB device number 2 using vhci_hcd
[   97.060497] vhci_hcd: vhci_device speed not set
[   97.130531] usb 1-1: SetAddress Request (2) to port 0
[   97.174031] usb 1-1: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice=81.33
[   97.174486] usb 1-1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[   97.174754] usb 1-1: Product: USB Serial

But I see no serial port device? Expecting /dev/ttyUSB0 or something comparable no?

# find /dev | grep -i tty | grep -i usb
[No Output]

[Jibun-no-Kage]

Was expecting more to be reported by dmesg.... For example on a Linux system...

[ 4097.193782] usbcore: registered new interface driver usbserial_generic
[ 4097.193802] usbserial: USB Serial support registered for generic
[ 4097.194265] usbcore: registered new interface driver ch341
[ 4097.194278] usbserial: USB Serial support registered for ch341-uart
[ 4097.194340] ch341 6-1.3:1.0: ch341-uart converter detected
[ 4097.195539] usb 6-1.3: ch341-uart converter now attached to ttyUSB0

[dorssel]

It looks like your WSL kernel does not have a driver for this device. What is the output of:

zcat /proc/config.gz | grep CH341

If it says CONFIG_USB_SERIAL_CH341=m, then the driver is a module and you may have to load it manually with modprobe...

[Jibun-no-Kage]

The instructions make no reference to this issue? But yes, appears module based...

# zcat /proc/config.gz | grep CH341
CONFIG_USB_SERIAL_CH341=m

Loading...

# modprobe ch341
# lsmod | grep ch341
ch341                  20480  0
usbserial              36864  1 ch341

I will test again, see if this resolves the issue.