Asking to CahtGPT was just for curiosity hoping for an eventual addressing
where to go....
About commands you suggest, hereunder the answer:
<root@debian:/home/frantal# sudo systemctl status networking.service
× networking.service - Raise network interfaces
Loaded: loaded (/lib/systemd/system/networking.service; enabled; preset: e>
Active: failed (Result: exit-code) since Wed 2024-03-13 11:54:42 CET; 4h 1>
Docs: man:interfaces(5)
Process: 536 ExecStart=/sbin/ifup -a --read-environment (code=exited, statu>
Process: 635 ExecStopPost=/usr/bin/touch /run/network/restart-hotplug (code>
Main PID: 536 (code=exited, status=1/FAILURE)
CPU: 80ms
mar 13 11:54:41 debian systemd[1]: Starting networking.service - Raise network >
mar 13 11:54:42 debian ifup[536]: ifup: unknown interface eth0
mar 13 11:54:42 debian systemd[1]: networking.service: Main process exited, cod>
mar 13 11:54:42 debian systemd[1]: networking.service: Failed with result 'exit>
mar 13 11:54:42 debian systemd[1]: Failed to start networking.service - Raise n>
root@debian:/home/frantal# sudo systemctl status NetworkManager.service
● NetworkManager.service - Network Manager
Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled; prese>
Active: active (running) since Wed 2024-03-13 11:54:42 CET; 4h 13min ago
Docs: man:NetworkManager(8)
Main PID: 569 (NetworkManager)
Tasks: 3 (limit: 9340)
Memory: 14.6M
CPU: 1.326s
CGroup: /system.slice/NetworkManager.service
└─569 /usr/sbin/NetworkManager --no-daemon
mar 13 11:55:20 debian NetworkManager[569]: <info> [1710327320.4031] dhcp4 (en>
mar 13 11:55:20 debian NetworkManager[569]: <info> [1710327320.4152] dhcp4 (en>
mar 13 11:55:20 debian NetworkManager[569]: <info> [1710327320.4177] policy: s>
mar 13 11:55:20 debian NetworkManager[569]: <info> [1710327320.4366] device (e>
mar 13 11:55:20 debian NetworkManager[569]: <info> [1710327320.4932] device (e>
mar 13 11:55:20 debian NetworkManager[569]: <info> [1710327320.4938] device (e>
mar 13 11:55:20 debian NetworkManager[569]: <info> [1710327320.4949] manager: >
mar 13 11:55:20 debian NetworkManager[569]: <info> [1710327320.4958] device (e>
mar 13 11:55:20 debian NetworkManager[569]: <info> [1710327320.4996] manager: >
mar 13 14:55:18 debian NetworkManager[569]: <info> [1710338118.8885] dhcp4 (en>
root@debian:/home/frantal# sudo journalctl -u NetworkManager.service
ago 09 01:48:22 debian systemd[1]: Starting Network Manager...
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.0709] NetworkMa>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.0710] Read conf>
ago 09 01:48:23 debian systemd[1]: Started Network Manager.
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.0836] bus-manag>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.0968] manager[0>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.0968] monitorin>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2567] hostname:>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2567] hostname:>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2574] dns-mgr[0>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2590] rfkill0: >
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2593] manager[0>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2593] manager[0>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2739] Loaded de>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2818] Loaded de>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2872] Loaded de>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2891] Loaded de>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2942] Loaded de>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2947] manager: >
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2949] manager: >
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2951] manager: >
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2953] dhcp-init>
ago 09 01:48:23 debian NetworkManager[545]: <info> [1660002503.2997] settings:>
> Il 13/03/2024 15:52 CET Franco Martelli <martelli...@gmail.com> ha scritto:
>
>
> On 13/03/24 at 10:19, fran...@libero.it wrote:
> > Hello,
> >
> > thanks for your answers.
> >
> > I used the cable with other notebooks and it worked.
> >
> > In any case I used another cable to test it, but I had the same
> > reactions, no connection!
> >
> > Today I had to give the command 3 times before having a connection...
>
> Do you have configured both NetworkManager and Debian
> /etc/network/interfaces? They cannot coexist, instead to ask to ChatGPT
> try this reading:
>
> https://wiki.debian.org/it/NetworkConfiguration
>
> What is it the output of the following commands?
>
> ~$ sudo systemctl status networking.service
>
> ~$ sudo systemctl status NetworkManager.service
>
> ~$ sudo journalctl -u NetworkManager.service
>
> --
> Franco Martelli
