Ethercat installation from repositories - how to step by step

Please go back to the first post and ensure you have followed every step.
It appears you missed this one
To ensure the ethercat port has permissions on startup. Create a udev rule

hi rodw
I had already given the permissions and everything had been working for some time
it happened after "apt upgrade"
now I gave them again, but nothing, if I start ethercat it gives me this:

 

Thank you

 

This is a different error so something has changed.
Its saying ec_master cannot be found but the full line is cut off.
If you have built from source, the location is different to using the repositories.
I would do this and go through the instructions in the first post exactly to reinstallsudo apt remove ethercat-master libethercat-dev  linuxcnc-ethercat
sudo apt install ethercat-master libethercat-dev  linuxcnc-ethercat

yes rodw
I had already done what you wrote
I did it again and it doesn't change
with sudo systemctl start ethercat.service
from error

 

but I only upgraded
Thank you

Hi rodw
I solved it by going back to linux-image-6.1.0-17-rt-amd64


work!

I install linux-image-6.1.0-18-rt-amd64 still error
I don't know, maybe the work of recent times
Thank you

Great you got there in the end. A week ago I did an upgrade and got 6.1.0.17 so 6.1.0.18 is very new. Perhaps its not supported by the ethercat master.