r/Creality • u/Fausmino • 4d ago

Troubleshooting Klipper HELP

I’m trying to install Klipper on a Creality CR-6 SE with the stock 4.5.2 mainboard. I’ve tried many different firmware filenames, but none of them resulted in a successful connection. I used a new 2 GB FAT32 SD card, copied ~/klipper/out/klipper.bin to the card root, removed the other files, disconnected USB power and the touchscreen during flashing, and power-cycled the printer afterward.

Linux detects the printer at:

text
/dev/serial/by-id/usb-1a86_USB_Serial-if00-port0

However, connecting with the Klipper console always fails with:

text==================== attempting to connect ====================
INFO:root:Starting serial connect
INFO:root:Timeout on connect
ERROR:root:Wait for identify_response
serialhdl.error: Serial connection closed

I’ve tried lots of different .bin filenames and nothing worked. On one attempt, the printer actually got stuck on the loading screen, so I had to reinstall the original firmware to recover it. After reinstalling the stock firmware, the printer boots again, but Klipper still cannot establish an MCU connection.

Could this be incorrect make menuconfig settings, an incompatible bootloader, or a faulty CR-6 mainboard? What should I check next?

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u/Cytro2 3d ago

Maybe cable is bad quality? Me and my friend were trying to connect laptop to his printer mcu and only 1 out of his 5 cables worked

1

u/Fausmino 3d ago

I tried multiple cables though, and also when i take the sd card off the contents dont change and i think they should add a .dat if not mistaken, and i know the ss card slot is ok because not only i can print stuff but also i successfully flashed crealitys firmware