Mcu 'mcu': Unable to connect but printer mcu shows in ssh

General Discussion
1

Basic Information:

Printer Model: Creality Ender-3 V1
MCU / Printerboard: Creality Stock 4.2.2 Board
Host / SBC: Raspberry Pi 4B
klippy.log: klippy.log (227.9 KB)

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
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Describe your issue:

I am unable to connect to mcu, sshing into the raspberry pi shows that it’s there, I have the correct path in the printer.cfg, though it just won’t connect, also I don’t think it’s that debian 11 issue since this is debian 12 (Raspberry Pi OS).
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2

Hello @Mukul1127 !

Have you checked that this is the correct serial id?

serial = /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0

with

ls /dev/serial/by-id/*

https://www.klipper3d.org/Installation.html#building-and-flashing-the-micro-controller

3

Yes, it is the correct id, I also tried using /dev/ttyUSB0