Klippy not connected? after updates

it is printing again… so I guess it is okay… send a g-code file from cura to the printer and it is running… So Yes , it is okay… :slight_smile:

I get to old for this shit… :slight_smile:

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I uninstalled Klipper with Kiauh, then reinstalled. But I’m still stuck. Is there a command to uninstall the latest updates?

Start with a new SD Card - keep the current one but start with a new one.

One thing is that you have everything loaded - I’m wondering if you’re getting interactions between the apps. Why don’t you start with just:

  • Klipper
  • Moonraker
  • Mainsail (or Fluidd)

and work from there.

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Can you confirm that your klippy.log is like Swets’? ie almost empty.
If there is nothing in the klippy.log, the next place to look is in the system log: journalctl -u klipper.

If for some reason klipper can’t initialize, the klippy.log file will contain nothing. This can be caused by issues with the interpreter or third-party modules. Or a low level error killing the process. These failures will be logged in the system log, accessible via the command I mentioned above.

You may also want to browse the unfiltered system log with journalctl --boot, looking for some related failure, like file system errors.


Apparently it can’t find my printer anymore.
Under Putty, I give it this command:
ls /dev/serial/by-id/*
And my response is:
pi@raspberrypi:~ $ ls /dev/serial/by-id/*
ls: cannot access ‘/dev/serial/by-id/*’: No such file or directory

At this point, I don’t know what to do.
I think I’m good at doing a full reinstall…
Here is my log:

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Ok, so your host klipper runs fine on the rpi side. It is likely that your are affected by this debian issue.

Thank you very much everyone for the help
I have access to the printer again. I just have to recover the camera which has become mute. But it’s the lesser evil.

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Don’t do os package updates while this page reports the version 247.3-7+deb11u2. It’s likely that your last systemd update was causing /dev/serial/by-id/* to disappear.
The version 247.3-7+deb11u3 solves this issue and will hopefully be released soon.

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