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Thread: No ethernet connection in Ubuntu 19.04 after changing motherboard

  1. #1
    Join Date
    Aug 2019
    Beans
    1

    Post No ethernet connection in Ubuntu 19.04 after changing motherboard

    This was fixed, here's how -> https://askubuntu.com/questions/1167...ng-motherboard



    so I've recently built a new PC and kept my SSD/HDD, so everything except my disk drive which has ubuntu installed on it changed. The ethernet connection doesn't work (it used to work on old PC on same ubuntu install), Wi-Fi still works through an USB adapter. Ethernet Connection works on another drive with Windows install so I know the port is working fine, it's only on Ubuntu. I'm looking for a way to get ethernet working without reinstalling ubuntu

    my ifconfig:

    Code:
    r0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
            inet6 fe80::3c60:9eff:fe5b:8d94  prefixlen 64  scopeid 0x20<link>
            ether 3e:60:9e:5b:8d:94  txqueuelen 1000  (Ethernet)
            RX packets 40313  bytes 5565185 (5.5 MB)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 1515  bytes 472236 (472.2 KB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    
        lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
                inet 127.0.0.1  netmask 255.0.0.0
                inet6 ::1  prefixlen 128  scopeid 0x10<host>
                loop  txqueuelen 1000  (Local Loopback)
                RX packets 78701  bytes 6556181 (6.5 MB)
                RX errors 0  dropped 0  overruns 0  frame 0
                TX packets 78701  bytes 6556181 (6.5 MB)
                TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        
        virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
                inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
                ether 52:54:00:71:a9:c1  txqueuelen 1000  (Ethernet)
                RX packets 0  bytes 0 (0.0 B)
                RX errors 0  dropped 0  overruns 0  frame 0
                TX packets 0  bytes 0 (0.0 B)
                TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        
        wlx0024010c2ae6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
                inet 192.168.1.41  netmask 255.255.255.0  broadcast 192.168.1.255
                inet6 fe80::bf4c:1503:726:f000  prefixlen 64  scopeid 0x20<link>
                ether 00:24:01:0c:2a:e6  txqueuelen 1000  (Ethernet)
                RX packets 73240  bytes 82584023 (82.5 MB)
                RX errors 0  dropped 0  overruns 0  frame 0
                TX packets 51703  bytes 7315654 (7.3 MB)
                TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
    as you can see there's no eth0 or eth1 in ifconfig, maybe that has something to do with the problem?

    my /etc/NetworkManager/NetworkManager.conf:

    Code:
        [main]
        plugins=ifupdown,keyfile
        
        [ifupdown]
        managed=false
        
        [device]
        wifi.scan-rand-mac-address=no
    also, it says 'Ethernet Network device not managed' when I click on the network icon on top right

    SPECS:


    Code:
       ASUS Maximus XI Hero (No Wi-Fi)
       Intel Core i9 9900k @ 3.6Ghz
       MSI GEFORCE RTX 2080 Ti
       32GB DDR4 Ram @ 2666MHz
    Last edited by darky1337; 4 Weeks Ago at 05:00 PM. Reason: fixed

  2. #2
    Join Date
    Aug 2017
    Location
    melbourne, au
    Beans
    100
    Distro
    Lubuntu Development Release

    Re: No ethernet connection in Ubuntu 19.04 after changing motherboard


  3. #3
    Join Date
    Aug 2011
    Location
    Berlin, Germany
    Beans
    7,692
    Distro
    Ubuntu Mate 16.04 Xenial Xerus

    Re: No ethernet connection in Ubuntu 19.04 after changing motherboard

    Please show the outputs of
    Code:
    lspci -nnk
    lsmod

  4. #4
    Join Date
    Apr 2011
    Location
    Mystletainn Kick!
    Beans
    10,346
    Distro
    Ubuntu

    Re: No ethernet connection in Ubuntu 19.04 after changing motherboard

    This was fixed, <snip>
    Then please mark this thread as solved.

    It would also be nice to repost the solution here as well.
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