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Remove the setup for the network you want to manage from the network file.
Leave the wired connection in the network file and use network manager for the wifi. I turn the wifi off whilst running a job.
May help with latency, stops Bad Guys from messing stuff up.

Hello Sir, i did read about that in the wiki.debian.org/NetworkManager
how may i make it visible and editable through the network manager. specifically the wifi connection.
also as i pointed above, i tried to make a new wifi connection to my mobile hotspot, but as you can see, i cannot connect to it or use it.

what is the go around?

If you setup a network interface in the interfaces file,
that particular interface is no longer managed by
the network manager.

quick question, why does my network manager look like this? im still connected to wifi, and also have the connection to mesa card, but those options dont show up. i also set up a new wifi connection 1 to a different source, but im not able to switch into it or make it run. 

Generally only suggested for Intel NIC, RPi uses a Broadcom NIC.

I would also recommend the zswap mod if you intended to use an interface other than Axis, there is a reference to that in the index.

Once you have networking setup you can configure your Mesa card as you would for a normal PC, there are plenty of threads on the forum regarding this subject, there is nothing particular to the RPi platform in this respect.

ah great! i managed to get connection to the mesa card and wifi simply through the sudo menu-config . like i said, i had gone through all the posts mentioned above, but going through them with index page you mentioned helped quite alot. now i can ping the card at 10.10.10.10 and get responses.

my next question is,

auto eth0
iface eth0 inet static
address 10.10.10.100
netmask 255.255.255.0

is sufficient in the interface file or shall i also add

hardware-irq-coalesce-rx-usecs 0 after netmask? and whats the significance of this line? Thanks again!

As the image is there is no root password, it is too easy to mess up the system when using root. As I stated in my first post you need to use sudo. It would be best for you to search to how to use the sudo command for tasks that require elevated privileges.
Teaching one how to use Linux is not something that I am willing to do on the forum and quite frankly there are many quality tutorials on the net.
This one www.debian.org/doc/user-manuals#debian-handbook whilst it maybe for an earlier version of Debian it is a good start, and you should be able to find something in your native language.

what is the root id and password sir? i only know the default user credentials "cnc" with password "cnc"

Please read the major thread regarding the RPi, it's a sticky.

Regarding editing files under
/etc you will require super user privileges, please use your favourite search engine to learn how to use sudo.

Once again it is not very helpful when a user says that something doesn't work without any error messages or the sort.

Once in the main RPi image thread I have written examples,covering many circumstances regarding network setup and what needs to be addressed in the network file.

There is even a sticky thread that is an index to the main RPi image thread.
forum.linuxcnc.org/38-general-linuxcnc-q...l-images-only#325007

Hello Senior Members,

I have begun working on my 2nd linuxcnc project. Previously, i have successfully set up 2 CNC machines with Linuxcnc and parallel port combined with a lot of help and learnings even for the most basic things from you all.

This time i have:
> Rpi 5, installed with LinuxCNC 2.9.4  Raspberry Pi 5 OS based on Debian Bookworm  Raspberry Pi 5 on a SD card through Raspberry pi imager.
> Mesa 7i96 board (fresh out of the box, w5 and w6 jumpers set on Down position)

I have read through forum.linuxcnc.org/9-installing-linuxcnc...l-images-only#320270 and rest of the topics, hm2_eth , network manager, and youtube videos. I am still unsure what to do and how.

> i cannot make a wifi connection with menu-config. i dont really understand it to be honest. what information to put and where?
> i cannot edit the etc/network/interfaces file, it does not let me save the changes. and what shall i change and not change in it?
> with network-manager-gnome im still not able to connect to a wifi or ethernet. also what is eth0 and wifi0 they cant be used?
> what is mesaflash? do i have to flash my mesa card or update it or whatever during my first boot? or does it work out of the box

If only somebody could just walk me through the barebones setup so that i can simply make a connection to the mesa card, and have wifi connection too.. from scratch. it would be very helpful for me and anyone like me. 

Best regards
Sk

You don't seem to have "addf"ed the lowpass and abs to the servo thread.
(See the other components in the HAL file for examples)

Hello I have Raspberry pi 5 and byte 2 bot hat on my mill and it works very fine and now i try to convert it to my lathe with a problem with the spindle speed reading and the index and phase a for cutting thread in the lathe . I have tried to read and understand the Hal mystery with a minor of luck . In Hal Meter i there are a signal at => lowpass.0.in but reading zero at  lowpass.0.out  => abs.0.in pyvcp_options.hal . Can somone helpfull help me with this problem / krister

There is a Linuxcnc image for the RPi. There is nothing special about the image, it is just Debian Bookworm with the Linuxcnc packages installed and a realtime kernel built from the Raspberry Pi official GitHub sources with the RT-Preempt enabled, no non RPi patches are added.
I can confirm booting from SD card, USB and Nvme all work.
For touchscreen I would be more inclined to use one with a USB interface that enumerates as HID, it is far easier to setup and basically "just works". This has been confirmed with a generic touchscreen bought from AliExpress, 10.1" in this case.
For a small form factor, x86/64 is the best bang for buck, I would suggest looking into the Odroid H series, I have been using an Odroid H3 since its release and it has not let me down.
Even a 3rd gen I5 is a better solution than the RPi 4 or 5. The only advantage is the small form factor and being able to connect to a Mesa SPI board. Compared to an ex corporate PC it is quite an expensive option.
The above opinion comes from use of the RPi-400, RPi5 with an Nvme drive and use of an Lenovo ThinkCentre with an i5 I found by the side of the road that someone was throwing away.

Moved to "computer and hardware".

Note that those are all Linux questions, not LinuxCNC questions
so perhaps better asked in a general Linux forum.