Arch Linux

TheSaint

Member

From: my computer

Registered: 2007-08-19

Posts: 1,523

[Solved] Latest kernel no ttyUSB0 but usbPL2303.

Hello forum,
a bit long no writing, sorry about it.
I searched for various keyword, but none gave me the result. So the issue is pretty short. Latest kernel

 uname -a
Linux AcerXC886 5.13.4-arch2-1 #1 SMP PREEMPT Tue, 20 Jul 2021 16:58:51 +0000 x86_64 GNU/Linux

introduced a different interface to the USB-UART converter. So using picocom/mincom doesn't give the opportunity to write and read from it.

failed to add port: Filedes is not a tty

The insertion is listed in /dev/ as usbPL2303, but the usual was ttyUSB0.
I downgraded the kernel and all resumed to function as expected.

For more details, I should go back and reinstall the latest kernel to show you the incongruence. I hope I gave the idea.

Last edited by TheSaint (2021-07-30 19:43:44)

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do it good first, it will be faster than do it twice the saint

TheSaint

Member

From: my computer

Registered: 2007-08-19

Posts: 1,523

Re: [Solved] Latest kernel no ttyUSB0 but usbPL2303.

I spotted that the device insertion lists two new entries in /dev.
So currently I updated the Kernel

$ uname -r
5.13.6-arch1-1

then looking through the listed devices I found

$ ls /dev/serial/by-id/
usb-Prolific_Technology_Inc._USB-Serial_Controller-if00-port0

which is a tty device expected by the terminal program.

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do it good first, it will be faster than do it twice the saint