[Etherlab-users] "Master0 dead" and unable to check fro masters/slaves

[Henrik Barie]

Hello Andreas,


I installed DKMS for Ubuntu 22.04 with
"sudo apt-get update" and "sudo apt-get -y install dkms".
I can now find several dkms directorys and files.

After I rebooted the system I tried to start ethercat-master with "sudo 
systemctl start ethercat", but I got an errormessage:

Job for ethercat.service failed because the control process exited with 
error code.
See "systemctl status ethercat.service" and "journalctl -xeu 
ethercat.service" for details.

"journalctl -xeu ethercat.service" gave out this:

Sep 20 12:34:15 ec-Lenovo-V15-G2-ITL ethercatctl[5838]: modprobe: ERROR: 
could not insert 'ec_master': Unknown symbol in mod>
Sep 20 12:34:15 ec-Lenovo-V15-G2-ITL systemd[1]: ethercat.service: Main 
process exited, code=exited, status=1/FAILURE
░░ Subject: Unit process exited
░░ Defined-By: systemd
░░ Support: http://www.ubuntu.com/support
░░
░░ An ExecStart= process belonging to unit ethercat.service has exited.
░░
░░ The process' exit code is 'exited' and its exit status is 1.
Sep 20 12:34:15 ec-Lenovo-V15-G2-ITL systemd[1]: ethercat.service: 
Failed with result 'exit-code'.
░░ Subject: Unit failed
░░ Defined-By: systemd
░░ Support: http://www.ubuntu.com/support
░░
░░ The unit ethercat.service has entered the 'failed' state with result 
'exit-code'.
Sep 20 12:34:15 ec-Lenovo-V15-G2-ITL systemd[1]: Failed to start 
EtherCAT Master Kernel Modules.
░░ Subject: A start job for unit ethercat.service has failed
░░ Defined-By: systemd
░░ Support: http://www.ubuntu.com/support
░░
░░ A start job for unit ethercat.service has finished with a failure.
░░
░░ The job identifier is 2704 and the job result is failed.


and status showed this:

× ethercat.service - EtherCAT Master Kernel Modules
      Loaded: loaded (/lib/systemd/system/ethercat.service; disabled; 
vendor preset: enabled)
      Active: failed (Result: exit-code) since Tue 2022-09-20 12:29:47 
CEST; 12s ago
     Process: 4970 ExecStart=/usr/local/share/etherlab/sbin/ethercatctl 
start (code=exited, status=1/FAILURE)
    Main PID: 4970 (code=exited, status=1/FAILURE)
         CPU: 4ms

Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL systemd[1]: Starting EtherCAT 
Master Kernel Modules...
Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL ethercatctl[4977]: modprobe: ERROR: 
could not insert 'ec_master': Unknown symbol in module, or unknown>
Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL systemd[1]: ethercat.service: Main 
process exited, code=exited, status=1/FAILURE
Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL systemd[1]: ethercat.service: 
Failed with result 'exit-code'.
Sep 20 12:29:47 ec-Lenovo-V15-G2-ITL systemd[1]: Failed to start 
EtherCAT Master Kernel Modules.
~


I checked if the ethercat.conf file in /etc is not modified but it is, 
and all other ethercat -files that could be modifed are modified too.
I dont know why it wont start anymore now.

I deleted the old files EtherCAT and PDServ at /home/user, but that was 
after the error occurred.

"please do not use the local path, they are the rest of your manual 
installation"

How can I be sure im not using the /local- Path?


I didnt know how to generate the code for my Simulink Model so I had to 
search it. I found out that my Matlab 2014b with Student Licence is 
missing the "Code Generation"-Tab in the Configuration Parameters of the 
model and that if you are using a Student version liense, MATLAB Coder 
and Simulink Coder can only be running MATLAB R2016a or later.

Is there any other way to generate the code for the model besides 
installing a later Matlab-Version?


Regards
Henrik