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Johnsandman
Asked: 2020-05-29 10:02:28 +0800 CST

strange behaviour wired network

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In Kubuntu 20.04, I have to put the cable of the wired network in and out for have to wire on.

Of course, I can also do sudo nmcli networking off/ on this will work too. I cannot find the issue of what is going on and why it doesn't get automatically. If using WiFi, I have also to fill in the kwallet. This is really strange.

Everything works perfectly accept the automatic online. Using commands and it works.

What could be a problem here?

Do you know it? Where are the configs of the network manager besides in the root? Is there also somewhere in the home dir?

I hope someone can give me some ideas to resolve this.

wireless kubuntu network-manager wired automatic

2 Answers

  1. *-network
    description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: enp2s0 version: 15 serial: d8:cb:8a:ed:18:4f size: 1Gbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=192.168.178.20 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s resources: irq:16 ioport:d000(size=256) memory:df204000-df204fff memory:df200000-df203fff *-network description: Wireless interface product: AR9287 Wireless Network Adapter (PCI-Express) vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:03:00.0 logical name: wlp3s0 version: 01 serial: f4:f2:6d:c7:05:f1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=ath9k driverversion=5.4.0-33-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11 resources: irq:18 memory:df100000-df10ffff

    /etc/network/interfaces: Bestand of map bestaat niet ( don't exsist )

    This is the network config written by 'subiquity'

    network: version: 2 renderer: NetworkManager

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  2. I added interfaces

    interfaces(5) file used by ifup(8) and ifdown(8)

    Include files from /etc/network/interfaces.d:

    This file describes the network interfaces available on your system

    and how to activate them. For more information, see interfaces(5).

    The loopback network interface

    auto lo iface lo inet loopback

    The problem still exist. When I log in i have to start the wired interface on the network-manager. yesterday there was a update and I hoped there was a solution, but still I need to put on the network it is still not automatic

    during the update the network-manager goes down and up again. It is only by login I need to start the network.

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