Octoprint 1.5.2 Error: No more candidates to test, and no working port/baudrate combination detected

What is the problem?

Initially was working with my 1st time booting up. After I update to the latest stable update. It is unable to detect my printer. Camera stream still working normally, Port is set to auto and baud rate are set to 115200. My printer is Ender-3. An error keep saying :

State: Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)

What did you already try to solve it?

Not sure where to start, still new to Octoprint.

Have you tried running in safe mode?

I tried in safe mode but still remain the same issue.

Did running in safe mode solve the problem?

Nope.

Complete Logs

octoprint.log, serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support! Not log excerpts, complete logs.)

Changing monitoring state from "Offline" to "Detecting serial connection"
Performing autodetection with 1 port/baudrate candidates: /dev/ttyUSB0@115200
Trying port /dev/ttyUSB0, baudrate 115200
Connecting to port /dev/ttyUSB0, baudrate 115200
Unexpected error while connecting to serial port /dev/ttyUSB0, baudrate 115200 from hook default: SerialException: '[Errno 5] could not open port /dev/ttyUSB0: [Errno 5] Input/output error: '/dev/ttyUSB0'' @ comm.py:_open_serial:3670
Could not open port /dev/ttyUSB0, baudrate 115200, skipping
Changing monitoring state from "Detecting serial connection" to "Error: No more candidates to test, and no working port/baudrate combination detected."
Changing monitoring state from "Error: No more candidates to test, and no working port/baudrate combination detected." to "Offline (Error: No more candidates to test, and no working port/baudrate combination detected.)"

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

I am using Raspberry Pi 4 Model B 2GB, Ender-3, Octoprint1.5.2.

1 Like

The problem was solved by just replacing the MiniUSB cable to my Ender-3

2 Likes

Hello @wongzhiwei1!

Great you found it.

So could you please:

This worked for me as well!
Thanks!