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One thing you can try is logging in via ssh, before things lockup, and when they do see if anything untoward shows up in dmesg or any of the other log files.

Does it occur when just running one of the sims from the Linuxcnc menus.

Are you able to use a config that uses Axis, if so does this give the same problems.

Just to confirm your are using one of the images from the downloads page, without an extra packages installed, cos I'm not sure if ctrl-esc gets the task manager. On the RPi5.which is the same apart from the kernel support, it doesn't bring up a task manager.

Before the title was changed, it was mainly to do with the Linuxcnc images, not Linuxcnc on Raspberry Pi OS.


Tommy if you see this can you change the topic heading so it reflects this is support for the Official Linuxcnc Rpi Images, I didn't intend for it to support Linuxcnc on the Raspberry Pi OS. That should be dealt with elsewhere.
I'm pretty sure the original tile reflected that.

I have a second Pi 400 on my Ham Radio station, so I switched the two keyboards and fired up LinuxCNC on the "new" board.  I let it sit for awhile trying to duplicate what happens.  Basically the display becomes unresponsive to anything.  The cursor moves around, but I cannot select between pages on GMOCCAPY. However I can still jog the machine around using my pendant, so It is still communicating with the Mesa 7i96 board. Also I cannot ctrl-Esc the Pi to access the task switcher, so something is locking up. 

Sorry, did not think it would affect the whole thread.

I think Scotta did some work with the Pico. Might be worth a look.

github.com/scottalford75/Remora-RP2040-W5500

i have options to push the poll rate even further with PIO&DMA + using the W5100s interrupt pin.I won't be bored for a few days.

i do not post it but i compiled my benchmark to windows also with nearly same results, so the pico is the bottleneck here.

i dont think all functions are able to handled with one pico, i have more time now for testing because the first PCB-s are only shipped on mar.23 and the components is in the coming week.

actually not using PIO now, the UDP data transfer runs on core0 and all io handling runs on the second core, i use the W5100s-evb-pico for the project with the wiznet library (using arduino ide) (for PIO testing i make a frequency generator (later stepgen) and send velocity from 1 of linuxcnc joint to it, it makes 2Mhz signal but dont have a fancy scope to find its jittering. Shock settled on my face, and a small smile appeared at the corner of my mouth when I saw the signal on the scope.

Looks promising. Many LinuxCNC hardware interfaces run at 1kHz, and that works fine for most purposes.
Are you using the PIOs to handle the communications? Maybe there are gains to be made there?

Does the Pi-Pico handle UDP natively?

i make another test this time with raspberry pi4 (4gb)
 

Hi everyone,
I recently ran a benchmark test on my LinuxCNC setup to measure the data request speed, and I thought I’d share the results with you all. I’d love to hear your thoughts or any suggestions for further optimization!
The setup was connected as follows: [Linux 4.19.0-27-rt-amd (core i5) PC (3 byte send 5 byte receive)] -> [switch (TL-SG1005D)] -> [W5100S-Pico]. This was a non-realtime throughput measurement, and the result I got was a stable 2500 requests/second, which I think is pretty solid. I’m curious about your experiences—has anyone else done similar benchmarks, and what do you think of this performance?

Thanks in advance for your input!

 

Fixed title.

unknown wrote:

Dude please don't change the subject, it makes things hard. I check this thread regularly.

I think it is useful to change the title from
"Linuxcnc & the Rpasberry Pi"
to that 
"Linuxcnc & the Raspberry Pi"

Dude please don't change the subject, it makes things hard. I check this thread regularly.

Ok the description is a little vague.

I don't think a clean install will "fix it". I don't think an update would have anything affect as the kernel,kernel modules and firmwares should not be touched during an update. In all honesty unless you are wanting to update Linuxcnc, there shouldn't be a need to do an update, most updates are just minor fixes that really don't affect the way Linuxcnc operates. The biggest "security threat" to cnc machine is someone getting physical access, and it would be the machine it self I would be the most worried about, blood gets everywhere, it's hard to clean and the injured party may want to blame you. I only will have wifi on when transferring files to the cnc machine, other than that I disconnect wifi.

I think you maybe experiencing an issue similar to what is discussed in this thread. Which it would is not Linuxcnc related, it's the ethernet port going to sleep/shutting down, tho it should be tx\rx ing packets more or less continuously. Yes I know it's a direct connection from the Pi to the Mesa card and the thread mentions switches a few times.
forums.raspberrypi.com/viewtopic.php?t=305820

It seems to be somewhat random to which boards are affected but I haven't noticed this on my RPi400.

Tho it might be an idea to check the power supply for the Pi & the mesa card. But if ti was the mesa card "dropping out" you would get notifications.