How to start a Network connection.

English Network/Internet
1

Hi all.

I have unintentionally deleted eth0 in module Connections by System Settings. Then I have recreated Wired Ethernet (eth0), but no luck - I have no wired network. And I can’t find a way to start it. Maybe it’s some command, that I need to issue?

Thanks in advance,

Vadim.

2

Try:

sudo systenctl restart network

or restarting Leap-15.3.

The “Wired connection 1” should be created and appear in
System Settings > Network > Connections
when the hardware is detected.
If it does not work, please confirm whether you are using Network Manager or Wicked and show output from

ip link
3

The KDE Plasma System settings?
[HR][/HR]Doesn’t really matter –

4

I’m using Network Manager.

This is an output of:

2: eth1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
link/ether 00:01:2e:82:a9:01 brd ff:ff:ff:ff:ff:ff
altname enp0s31f6

Restart not helped.

Thanks.

5

Thanks, will try in a moment.

6

So, success.

But.
I have 2 Ethernet jacks in my computer. I have reconnected (from the second to the first) the Ethernet wire and network has started automatically.
Furthermore, I don’t know whether the second jack failed. Will try to figure it in the future.

Thanks, Vadim.

7

The output from “ ip link ” suggests that only one ethernet port is being detected at startup. Before doing anything more drastic try a cold start. It may be that a firmware register is corrupt, and a physical power off and on will reset it.

Shut the computer down.
Physically disconnect from the mains power (pull the cable out) for two minutes before reconnecting and restarting.
If it is a laptop, you might (but not necessarily) have to disconnect the battery.
Check either with “ ip link ” or YaST > System > Network Settings whether both ethernet ports are detected.