Ethernet connection doesn't show any device

Discussion in 'Server Operation' started by deividmen, Aug 28, 2019.

  1. deividmen

    deividmen New Member

    I have an Ubuntu 16.04 server with ISPConfig 3.1. I've got problem with my Ethernet connection, although the Wifi connection works fine.

    I have seen many issues related to the Ethernet connection not working, but I still can't manange to fix it. I tried adding a new connection through the following path:

    Edit Connections... > Add > Ethernet > Create... > Device

    But it doesn't show any device.

    This is the output from isfconfig -a:

    Code:
    lo        Link encap:Local Loopback 
              inet addr:127.0.0.1  Mask:255.0.0.0
              inet6 addr: ::1/128 Scope:Host
              UP LOOPBACK RUNNING  MTU:65536  Metric:1
              RX packets:2071511 errors:0 dropped:0 overruns:0 frame:0
              TX packets:2071511 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:2983682547 (2.9 GB)  TX bytes:2983682547 (2.9 GB)
    
    wlx0025224e5605 Link encap:Ethernet  HWaddr 00:25:22:4e:56:05 
              inet addr:192.168.0.15  Bcast:192.168.0.255  Mask:255.255.255.0
              inet6 addr: fe80::23b2:cd5e:f937:c3a0/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:7245 errors:0 dropped:0 overruns:0 frame:0
              TX packets:4721 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:9262409 (9.2 MB)  TX bytes:1080405 (1.0 MB)
    This is inside /etc/network/interfaces:

    Code:
    # interfaces(5) file used by ifup(8) and ifdown(8)
    auto lo
    iface lo inet loopback
    And this is inside /etc/NetworkManager/NetworkManager.conf:

    Code:
    [main]
    plugins=ifupdown,keyfile,ofono
    dns=dnsmasq
    
    [ifupdown]
    managed=false
    Any suggestions?
     
    Last edited: Aug 28, 2019
  2. Taleman

    Taleman Well-Known Member HowtoForge Supporter

    Which device should be there? Does
    Code:
    lspci
    
    show ethernet devices?
    Once you figure out what Ethernet devices your computer has, check you have drivers loaded for those. Especially on laptop computers I have seen ethernet devices where I need to download the driver from someplace. And big server iron, there also driver may not be included in default Linux kernel.
    Command dmidecoce may be useful when figuring out what hardware computer has. Or maybe lshw.
     
  3. deividmen

    deividmen New Member

    This is the output:

    Code:
    00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
    00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
    00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
    00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
    00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
    00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
    00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset LPC Controller (rev 05)
    00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port Desktop SATA AHCI Controller (rev 05)
    00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
    01:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)
    01:00.1 Audio device: NVIDIA Corporation High Definition Audio Controller (rev a1)
    I don't see any ethernet driver. I guess I'll have to install it.
     
    Last edited: Aug 28, 2019
  4. Taleman

    Taleman Well-Known Member HowtoForge Supporter

    The lspci command shows devices. Indeed there are no Ethernet devices, not even WiFI. Does command lsusb show the WiFI device?
    Does the computer have a wired Ethernet port? Does BIOS show it as disabled?
     
  5. deividmen

    deividmen New Member

    This is the Ooutput from lsusb:

    Code:
    Bus 002 Device 005: ID 0bda:8187 Realtek Semiconductor Corp. RTL8187 Wireless Adapter
    Bus 002 Device 004: ID 046d:c534 Logitech, Inc. Unifying Receiver
    Bus 002 Device 003: ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
    Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    It does have a wired Ethernet port, and BIOS shows "Onboard Ethernet Controller" as Enabled.
     

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