Printer won't connect to Octopi

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1

What is the problem?

My environment hasn't changed, apart from updates, for the last three years. Yesterday my printer (Creality CR-10 S5), stopped connecting to Octopi. Everything seems to be happy, but it just won't connect.

What did you already try to solve it?

Rebooted the printer & Octopi server
I tried connecting to other USB ports on the Pi

Have you tried running in safe mode?

Yes

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!)

WRITE HERE

Additional information about your setup

octoprint-systeminfo-20251021130108.zip (56.7 KB)

OctoPrint 1.11.3
Python 3.11.2
OctoPi 1.1.0
Linux octopi 6.6.51+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.6.51-1+rpt3 (2024-10-08) aarch64
Creality CR-10 S5

2

You keep attempting to connect with 57600 baud. That's probably not the right baudrare unless you've manually flashed your firmware to that.

Enable serial.log. Try connecting at 115200 and 250000 baud. If that fails, create a fresh system info bundle right after and share this here.

1 Like
3

I switched it to AUTO and it connected at 115200
Jeez, boy do I feel like an idiot. I have no clue how that would have changed though, but whatever, thanks for pointing that out.

1 Like
4

Interestingly, it looks like my OctoPrint GUI, has now started to default to 57600 when I restart it, even though my printer connects at 115200

5

When you changed the setting in the connection dialog did you check the box to save the setting?