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I'm sorry if that came out sounding arrogant, that was not the intent. I totally understand why Tommy suggested apt update, I just wanted to quite literally save his and my time.

I can certainly build it myself, or use 2.9.4 that works just fine for my purposes, or whatever. I don't have a problem, LinuxCNC has a problem, and being unable to fix it for everybody, I'm reporting it here in hopes that someone blessed with permissions does that.

Raspberry Pi OS Lite doesn't come with a desktop environment or a window server pre-installed, so I'm free to choose what to use (XFCE obviously lol). PREEMPT_RT kernel is available as an official package from Raspberry Pi debian repos these days and works fine. I'm not sure what the "official" linuxcnc raspberry pi image would give me at this point, and it is much harder to use for me personally - it requires me to connect a display/keyboard, for example. As to libgpiod or axis, I don't use either so I can't say anything about them.

With your 20 years experience if you really want 2.9.5 on arm you can always build it yourself.
As for the version differences that will depend on the system the packages were built on.
Was there any reason, apart from the official arm image being based on Bookworm, that you went with Raspberry Pi OS Lite ?
Does that give you the choice of Wayland or X11.
Look we get a lot of users with varying degrees of Linux Experience, as we can't tell your experience usually we start advice with the basics. So no it's not a waste of time starting with said basics.
From memory when I attempted to build an RPi image based on Devuan, based on Trixie or maybe unstable, there was an issue with the libgpiod library. At the time the libgpiod driver would not compile against version 2.0 so I abandoned that idea due to that. As far as I know I'm unaware of that situation has changed. Bear in mind that there are some issues that affect Axis in 2.9.5 and 2.9.6 that have been well reported on the forum. It would appear they have been resolved but looks like we need to wait for a 2.9.7 version.

Thanks, I'll give that a try.

Seems a bit over the hedge, i mentioned multiple times that for under 100$ it is very OK, but 279$ i can not justify nor advise any longer.

TryRun install again.

I've done that, quite obviously. I think it is better to save time and skip obvious advices, I have 20 years of in-depth professional experience with Linux behind my back.

The real issue is that the package depends on the version of python3 that trixie doesn't provide, as can be seen here :

amd64 package depends on 3.13 :

It looks like a simple oversight more than anything else, those things happen. If it is, I hope it gets corrected soon!

What Linux OS being used including kernel type?
Debian 12
-  What version of Linuxcnc is installed?
2.9.4

-  What version of QtPyVCP and Probe Basic is installed?
Version from here: kcjengr.github.io/probe_basic/quick_star...l#installation-steps

-  How did you install Probe Basic? Quickstart guide? Dev Guide? 
I followed the quickstart guide.

I get an error when I run the third command 'sudo dpkg -i python3-qtpyvcp_5.0.2-19.dev_amd64.deb'
The download folder shows the file.

 

Must do:first, then try installing.