Klipper Disconnects Randomly

General Discussion
1

Basic Information:

Printer Model: Artillery Genius Pro
MCU / Printerboard: Artillery Ruby 1.2
Host / SBC: I dont know what this is…
klippy.log (140.0 KB)

I have a Mac Mini 2007 with upgrades CPU and RAM. I can only install MX Linux AHS, and cannot do much work on it. I decided to plug it to my Artillery Genius Pro and use it for my 3D printing works. I used KIAUH to install Klipper, MoonRaker and Mainsail. Then, I did the necessary setup on the config files. However, Klipper randomly gives error mentioning that Moonracker and Klipper are disconnected.
In the log file, I see the following.

mcu ‘mcu’: Starting serial connect
mcu ‘mcu’: Unable to open serial port: [Errno 2] could not open port /dev/serial/by-path/pci-0000:00:1d.0-usb-0:1:1.0: [Errno 2] No such file or directory: ‘/dev/serial/by-path/pci-0000:00:1d.0-usb-0:1:1.0’
webhooks client 124310830158864: New connection
webhooks client 124310830158864: Client info {‘program’: ‘Moonraker’, ‘version’: ‘v0.8.0-354-gba94285’}
mcu ‘mcu’: Unable to open serial port: [Errno 5] could not open port /dev/serial/by-path/pci-0000:00:1d.0-usb-0:1:1.0: [Errno 5] Input/output error: ‘/dev/serial/by-path/pci-0000:00:1d.0-usb-0:1:1.0’

I could not find something to fix this issue but after some (maybe 10-30) restarts, the connection between Moonraker and Klipper seems to be established, and it starts working fine untill an unknown time.

I have tested this with another PC which has Linux Mint XFCE, and received the same error. I have attached my Klipper.log, I hope it will be helpful. This situation became very frustrating, I am having only 1 of my 3 prints complete. Your help in this direction is highly appreciated.

Best regards.
bkarpuz

2

This is going to sound cliche, but have you tried another USB cable? That error usually means it’s having trouble physically connecting.

Flaky connections are a common effect with marginally functional cables.

3

I have tried 3 different USB cables. I have even tried the shortest cable (using for Arduino) to prevent energy loss but the same situation happens.

4

Wait, Is it randomly disconnecting or is it ever actually connecting? Your log doesn’t show it ever connecting.

5

I got the log file right after the connection failed. As I said, after several firmware restarts and PC reboots, the connection is established.

6

I have tried another cable, and you know what? It did work. I cannot believe this. @TheFuzzyGiggler Thank you, you made me suspicious about this as I was so sure that the problem was something else…

Now, I have a 3 meters UGreen USB A to USB B cable, and I am having a very good connection.

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7

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