Basic Information: [Screenshot 2025-07-22 192840] Printer Model: Voron2.4 MCU / Printerboard: Octopus 1.1 Host / SBC BTT Pi 1.2 klippy.log klippy.log (2.7 MB) Full log. 40mb. klippy.zip (3.2 MB) Fill out above information and in all cases attach your klippy.log file (use zip to compress…

[S__18776067_0] RPI4 [S__18776070] BTT PI No problem now after upgrading to Pi4. I think the problem mainly came from the BTT’s Klipper prebaked OS image, as there are people who got BTT Pi to work well for them. I have a problem installing Armbian or even installing Klipper from scratch wit…

Your log does not seem to contain any relevant shutdown events. What is the error message in the webinterface? Please provide a log showing the issue.

It just show MCU disconnect without any explanation. How do I know which file and which line show error?

Reproduce the issue and take a screenshot, please. Also attach the klippy.log directly after the event.

[Screenshot 2025-07-22 192840] The file is too large to upload on this site so… Zippyshare - klippy.log Zippyshare is 100% free unlimited file hosting platform that allows users to upload, store, and share files with other - zippyshare.day. moonraker.log (1…

[image] erk: Zippyshare — Download — klippy.log Please upload your logs here - not to (another) file server. If the log is too long, you can zip to compress it.

From the log, it seems that the Klippy-host on your BTT Pi is spontaneously restarting. This, in turn, leads to an MCU shutdown and is the consequence of the error you also see on your screenshot – the MCU needs a reset to clear its error condition. Make sure you are not doing something to initiat…

It look like this. biqu@VORON-V2:~$ journalctl -u klipper.service -n 20 Jul 22 03:17:18 VORON-V2 systemd[1]: Started klipper.service - Klipper 3D Printer Firmware SV1. Jul 22 11:59:43 VORON-V2 systemd[1]: klipper.service: Main process exited, code=killed, status=11/SEGV Jul 22 11:59:43 VORON-V2 sys…

This is, unfortunately, an unfavorable result for multiple reasons: It appears to be a segmentation fault of the host process. It does not seem to contain any stack traces → manually scrutinize your logs for more information, e.g. syslog, kern.log (check what is available) etc. You are using a mod…

That’s a very very huge klippy.log MCU randomly disconnect - #7 by erk :wink: My first impression is, you run a very hot system. [temp_sineos_2] MCU-TOOLHEAD: (I guess an EBB) up to almost 90°C! That is amazing. Or I made a mistake! LINUX-HOST: BTT Pi 1.2 up to almost 66°C. That’s very hot. MC…

MCU randomly disconnect

General Discussion

erk July 22, 2025, 1:22pm 7

klippy.zip (3.2 MB)

Klipper Log Visualizer

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MCU randomly disconnect

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