0

Few days ago I had to connect to Internet through PPPoE and I used pppoeconf. Now I came back to dhcp. But whenever I make a new wired connection with NetworkManager it doesn't get able to connect with, like this:

wired connection error

If I try to connect through nmcli:

sudo nmcli connection up New\ 802-3-ethernet\ connection
Error: Connection activation failed: No suitable device found for this connection.

dhclient doesn't works too.

But if I reboot my laptop with Ethernet cable plugged in it works properly (while cable doesn't plug out and in again).

My /etc/network/interfaces file:

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

auto enp3s0
iface enp3s0 inet dhcp

So why does it would happen and what can I do to fix it?

Kubuntu 16.04

Cristiana Nicolae
  • 4,570
  • 10
  • 32
  • 46
Vladislav Chebanyuk
  • 1
  • 1

1 Answers1

0

From here I got that any interface listed in /etc/network/interfaces are not managing by NetworkManager, so I just deleted enp3s0 interface from this file and that is works.

/etc/network/interfaces looks like this now:

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
Community
  • 1
Vladislav Chebanyuk
  • 1
  • 1