Raspberry Pi 4 with PlasmaC

If you launch LinuxCNC from the command line,
does it say:

"Note: Using POSIX realtime" ?

You may have missed the part where you select "Fully Preemptable Kernel"
in the configuration editor (or forgot to save the modified config file)

tecno wrote: I added isolcpus = 1,2,3

But I stll get hm2/hm2_7i96.0: error finishing read

I had this same issue and it went away after I changed the servo period to 2000000. I didn't try find out why as it seems to work ok at this servo period.

This is mine after 48 hours:


[strike]Below is a link to my complete /boot directory. The elf files are for the beta bootloader discussed here [/strike]

[strike] drive.google.com/file/d/1jG5ZZrtoZnuGZBr...5TC/view?usp=sharing [/strike]

EDIT: This is now a complete image forum.linuxcnc.org/plasmac/39179-raspber...smac?start=80#170904

So a question.

Is it that easy to fix a new Buster on SD and copy your /boot (not cmdline.txt as I stil want to run on SD until I get SSD)?

It won't give you the full Buster, only the realtime kernel.

I think if you copy:
overlays directory
*.dtbfiles
kernel7l-rt.img
config.txt
cmdline.txt

it should work.

Of course keep backups of your originals

If you ask the transfer from sd to ssd.
7use read in windisk imager to copy sd to pc-disk
Use windisk or i prefere etcher to transfer that copy to ssd.
Working like a charm
Mike

Will give it a go and report my findings.

Thank you Phil

Mike_Eitel wrote: If you ask the transfer from sd to ssd.
7use read in windisk imager to copy sd to pc-disk
Use windisk or i prefere etcher to transfer that copy to ssd.
Working like a charm
Mike

Yes, I always use Balena Etcher and it always works.

Sorry but that was a no-go = still only SMP

did you use my config.txt, that is where the rt kernel is selected.

No PARTUUID is for your USD drive ?