Octo4a Handshake fails

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1

What is the problem?

The handshake fails in the Terminal window

What did you already try to solve it?

Changed serial driver from default CH341 to others. No change

Have you tried running in safe mode?

WRITE HERE

Did running in safe mode solve the problem?

No

Systeminfo Bundle

You can download this in OctoPrint's System Information dialog... no bundle, no support, unless the reason you couldn't retrieve the bundle is your network issues

browser.user_agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36
connectivity.connection_check: 1.1.1.1:53
connectivity.connection_ok: True
connectivity.enabled: True
connectivity.online: True
connectivity.resolution_check: octoprint.org
connectivity.resolution_ok: True
env.hardware.cores: unknown
env.hardware.freq: unknown
env.hardware.ram: unknown
env.os.bits: 32
env.os.id: linux
env.os.platform: linux
env.python.pip: 22.3.1
env.python.version: 3.10.10
env.python.virtualenv: False
octoprint.last_safe_mode.date: unknown
octoprint.last_safe_mode.reason: unknown
octoprint.safe_mode: False
octoprint.version: 1.9.2
systeminfo.generated: 2023-08-13T21:40:27Z
systeminfo.generator: zipapi

Additional information about your setup

Hardware you are trying to connect to, hardware you are trying to connect from, router, access point, used operating systems, ... as much data as possible
The connection on the Octo4a seems fine. It shows Octoprint running and shows the connection to the printer - dev/bus/usb/001/004. The camera shows the printer via :5001/mjpeg in my browser. But, when I select Connect, it gives me this for each of the baud rates:
2023-08-13 21:10:38,944 - Enabling serial logging
2023-08-13 21:10:40,857 - Trying port /dev/ttyOcto4a, baudrate 19200
2023-08-13 21:10:40,864 - Handshake attempt #1 with timeout 5.0s
2023-08-13 21:10:40,868 - Send: N0 M110 N0125
2023-08-13 21:10:45,874 - Handshake attempt #2 with timeout 5.0s
2023-08-13 21:10:45,881 - Send: N0 M110 N0125
2023-08-13 21:10:50,887 - Handshake attempt #3 with timeout 5.0s
2023-08-13 21:10:50,897 - Send: N0 M110 N0125
2023-08-13 21:10:55,902 - Trying port /dev/ttyOcto4a, baudrate 9600
2023-08-13 21:10:55,909 - Handshake attempt #1 with timeout 5.0s
2023-08-13 21:10:55,913 - Send: N0 M110 N0125
2023-08-13 21:11:00,920 - Handshake attempt #2 with timeout 5.0s
2023-08-13 21:11:00,931 - Send: N0 M110 N0125
2023-08-13 21:11:05,934 - Handshake attempt #3 with timeout 5.0s
2023-08-13 21:11:05,943 - Send: N0 M110 N0125
2023-08-13 21:11:10,948 - Changing monitoring state from "Detecting serial connection" to "Error"
2023-08-13 21:11:10,971 - Changing monitoring state from "Error" to "Offline after error"
2023-08-13 21:11:10,983 - Connection closed, closing down monitor

2

This is an unusual baudrate to use. Have you tried the others/auto?

Just seen you said it was the same for each baud rate, sorry.

One important detail - what printer do you have?

3

I should have mentioned that - Ender 3 V2 Neo

4

Lot of false leads there, The printer is not connecting to the Ender3 serial port.
Assuming the ender 3 is working properly, this would appear to be pointing to a problem with the serial cable or the serial ports on either end. check the ports for any material that has become lodged in the port and replace the cable.

5

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