Arch Linux

trueretardo

Member

Registered: 2018-10-16

Posts: 1

Cable internet not working

Hi, I am a new Arch user and I am having problems with setting up my cable internet.

I have set up WiFi during installation process and it works perfectly fine.
Cable internet works fine on different Ubuntu distro which I installed on second HDD.

My laptop is Thinkpad-P51.

When I plug in Ethernet cable, it's simply not recognized by Network Manager (when I run nmtui-connect only wireless connections are listed).

Here is the output of ip link:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DORMANT group default qlen 1000
    link/ether 00:28:f8:ff:c3:d7 brd ff:ff:ff:ff:ff:ff
3: enp0s31f6: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000
    link/ether 54:e1:ad:20:26:f0 brd ff:ff:ff:ff:ff:ff

lspci -v

00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (5) I219-V (rev 31)
        Subsystem: Lenovo Ethernet Connection (5) I219-V
        Flags: bus master, fast devsel, latency 0, IRQ 133
        Memory at ed800000 (32-bit, non-prefetchable) [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: e1000e
        Kernel modules: e1000e

dmesg | grep e1000e

[    2.715269] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[    2.715270] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    2.715477] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[    3.192575] e1000e 0000:00:1f.6 0000:00:1f.6 (uninitialized): registered PHC clock
[    3.276143] e1000e 0000:00:1f.6 eth0: (PCI Express:2.5GT/s:Width x1) 54:e1:ad:20:26:f0
[    3.276163] e1000e 0000:00:1f.6 eth0: Intel(R) PRO/1000 Network Connection
[    3.276226] e1000e 0000:00:1f.6 eth0: MAC: 12, PHY: 12, PBA No: FFFFFF-0FF
[    3.279767] e1000e 0000:00:1f.6 enp0s31f6: renamed from eth0
[    5.366148] e1000e: enp0s31f6 NIC Link is Up 10 Mbps Full Duplex, Flow Control: None
[    5.366151] e1000e 0000:00:1f.6 enp0s31f6: 10/100 speed: disabling TSO
[  419.776335] e1000e: enp0s31f6 NIC Link is Down
[  422.102262] e1000e: enp0s31f6 NIC Link is Up 10 Mbps Full Duplex, Flow Control: None
[  422.102271] e1000e 0000:00:1f.6 enp0s31f6: 10/100 speed: disabling TSO

I tried to read Arch wiki but couldn't figure out what to do next / how to debug this further.

Thanks for reading and please halp

Last edited by trueretardo (2018-10-16 09:55:40)

teckk

Member

Registered: 2013-02-21

Posts: 525

Re: Cable internet not working

enp0s31f6 is your wired interface.
Have only 1 network manager running and configure it.
https://wiki.archlinux.org/index.php/NetworkManager

If you get stuck on some step then post it and the error that you are getting.