Solved: /dev/ttyUSB0 missing with USB-to-serial adapter

Printers, HDDs, USB/eSATA drives, 3rd-party programs
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hello_world.c
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Solved: /dev/ttyUSB0 missing with USB-to-serial adapter

Post by hello_world.c »

I have a TS-431P with firmware 4.4.1 and kernel version 4.2.8. I need to access a USB-to-serial adapter, but /dev/ttyUSB0 is not created and I can't access the port. I have it listed in lsusb:

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[~] # lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 0403:6015 Future Technology Devices International, Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
and the necessary kernel modules seem to be automatically loaded (list shorted):

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[~] # lsmod
pl2303 10337 0 - Live 0x7edd6000
usbserial 26316 1 pl2303, Live 0x7edc8000
How can I make the system generate /dev/ttyUSB0 or do it myself?
Last edited by hello_world.c on Mon Mar 30, 2020 9:24 pm, edited 2 times in total.
hello_world.c
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Joined: Mon Mar 30, 2020 5:27 pm

Re: /dev/ttyUSB0 missing with USB-to-serial adapter

Post by hello_world.c »

Solved by doing this:

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modprobe ftdi_sio
Now I can see and access /dev/ttyUSB0 and dmesg |grep usb shows:

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[12308.147811] usbcore: registered new interface driver ftdi_sio
[12308.153612] usbserial: USB Serial support registered for FTDI USB Serial Device
[12308.167626] usb 1-1: Detected FT-X
[12308.174093] usb 1-1: FTDI USB Serial Device converter now attached to ttyUSB0
boeroboy
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Re: Solved: /dev/ttyUSB0 missing with USB-to-serial adapter

Post by boeroboy »

Awesome sauce. I was just looking for this same feature. Thanks for exactly what I needed.
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