No ethernet connection available in Ubuntu 20.04

I just installed Ubuntu 20.04 on a clean SSD alongside windows to do C development and when I first booted, there was no internet connection yet my ethernet worked perfectly in windows.

My network controller is the realtek RTL8125 2.5 gb and is labelled “UNCLAIMED” when I run the lshw -C network command. I can access the internet using a USB tether to my phone but nothing I have tried so far has fixed the problem.

Would appreciate any help

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Author: Liam Doughty

Why is Ubuntu 20.04 not registering ethernet on my Raspberry Pi?

When the Raspberry Pi boots up, Ubuntu 20.04 says the following:
Net: No ethernet found.
starting USB…
No working controllers found

It continues to boot up, but this means that I can not install a desktop environment on it. The ethernet port and cable work fine, and the Raspberry Pi ethernet jack lights up when the cable is plugged in. How do I get ethernet to be recognized?
Thanks!

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Author: techyguy2

Help please – installed ubuntu 18.04 lts – cant get ethernet/wifi working

I have a dell optiplex 9010 desktop PC. I have just installed ubuntu 18.04, alongside windows 10, on my hard disc in a separate partition. All is ok except I cannot establish an internet connection.
When I go onto settings> Wi-fi…..it says no wifi adapter found. I have tried running an ethernet cable from laptop to desktop but it will not establish a connection. I then tried tethering my mobile phone and this allowed me to go online however I still cant figure out how to install the drivers!!

Using my laptop (packard bell) I have looked online for the drivers for these devices only because I am assuming the device drivers are not present, I downloaded from an intel web site what I think are the related drivers. The name on the file to be extracted was e1000e-3.8.4.tar.gz.
I have extracted these files to a usb stick but have no idea if 1) This is the probable fix and 2) if it is how can I upload these drivers to my desktop. (my desktop is an optiplex 9010)

I am very new to linux and following some suggestions online I used the terminal command ‘lspci’ and this showed the following what I believe to be wifi/ethernet related devices on the system:

  1. ethernet controller [0200]:intel corp 82579LM gigabit network connection.
    Subsystem: Dell 82579LM gigabit network connection.
    Kernel driver in use: e1000e.
    Kernel modules: e1000e
  2. ethernet controller [0200]:intel corp 82572EI gigabit ethernet controller. Subsystem: intel corp PRO/1000PT server adapter [8086:1082]
    Kernel driver in use: e1000e.
    Kernel modules: e1000e

I have two ethernet cards in my desktop.

  1. Intel PRO/1000PT server adapter 82572EI and…
  2. Intel 82579LM gigabit network connection…

Any help would be very much appreciated. Thanks in advance.

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Author: zatta303