Printer Complete Shutdown - No Log

General Discussion
1

Basic Information:

Printer Model: Self Build, Double Core XY
MCU / Printerboard: BTT Octopus
Host / SBC: Raspberry Pi 3B+
klippy.log

Describe your issue:

I have a very strange issue, my printer stops mid print and I can’t connect to it anymore. So far so normal if something goes very wrong. But I can find anything in the log (maybe some of you can spot something?). If I unplug the MCU, the Raspberry can be accessed again. A reconnect of the MCU crashes everything again. Just a full shutdown of the MCU helps.

Things I tried so far:

  • Print slower
  • More Cooling of the TMC Drivers, MCU and Raspberry
  • Replacing the USB-Cable
  • Even More Cooling of the TMC Drivers, MCU and Raspberry + Monitoring the Temps.
  • Updating the MCU (MCU and Host now again different versions, but it really didn’t help)

The only idea I have currently is to buy a new MCU. Maybe someone has another idea what to try first?

klippy.log (3.1 MB)

2

My pure guess RP3 + Hang → DWC2 thing
So, it should probably be fixed with dtoverlay=dwc2 or with a kernel of 6.1+, which IIRC does not hang.

Ex: PI freezes after setting mcu USB id - #9 by cyablo

Hope that helps,
-Timofey

3

Thx, it’s worth a try!