Basic Information: Printer Model: Ender 3 Neo MCU / Printerboard: V4.2.2 GD32F303RET6 klippy.log (107.1 KB) I do not have a RPi, so I used KIAUH and my Ubuntu 22.04.04 LTS Desktop laptop to use it instead of the RPi and connect it to my Ender 3 Neo printer. In the KIAUH, I have 3 options to sel…

Work through Issues flashing the printer board and especially mind the chapter Linux Issues WRT Modemmanger / BRLtty

Thank you @theophile for your answer! It works but unfortunately only when safe boot is turned of, because the CH340 drivers were unsigned. I try to sign them so to solve the problem. I tried openssl and creat a signature, but I cannot find a way to sign the already uploaded ch340. Do you have any …

Thank you @Sineos for the guidelines, I found also some other things about Ubuntu, that I was suspecting but I wasn’t sure. As I wrote to @theophile the connection is achieved only when safe boot is turned off. I have created the cert.pem, csr.pem and key,pem through openssl. Do you know how to sign…

[image] Bilarous: It works but unfortunately only when safe boot is turned of, because the CH340 drivers were unsigned. I’m not sure what steps you followed but the Linux kernel has had CH340 support for a long time so there should be no need for using unsigned or out-of-tree drivers.

Okay… I read some posts online that claimed that CH340 drivers were corrupted. So I probably caused an additional problem to myself… I will try to find a way to remove the CH340 drivers I added. I will do so, and if it works afterwards I will mark the issue Solved. Thank you @theophile !

@theophile indeed Linux kernel has CH340. My old Ubuntu had corrupted CH340 drivers, this is why Klipper didn’t connect without the out-of-tree drivers. I reinstalled Ubuntu from the beginning and the problem is solved! Thank you for the help!

Unable to succesfully use Klipper on PC

General Discussion

theophile April 1, 2024, 10:02pm 2

It sounds like your board hasn’t been properly flashed. Maybe this will help with your particular board: Support for new Creality boards 4.2.2 with GD32F303 - #54 by vecktor

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Unable to succesfully use Klipper on PC

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