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This seems to be a longstanding bug that has appeared in many releases. A fresh install of Ubuntu Desktop 20.10 does not show the Wired Network Settings. I only have Wireless internet access. Turning this off results in no internet. The ethernet cable is working, since Windows on the same PC running on it. The ethernet LED lights are also indicating a connection and on Manjaro - which I had installed previously - had an ethernet connection. Therefore I suspect the problem to reside in Ubuntu software.

No wired network settings:

No wired network settings

Running the following line results in the following output:

sudo lshw -c net

Output:

Output

Does anyone know how to let the wired network setting appear, and enable ethernet?

karel
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Nuss9
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4 Answers4

10

Had the same problem and for me the issue was in my netplan yaml file. I had to change the "renderer" to NetworkManager in the netplan file. You may need to add or change the renderer line as follows, and then "sudo netplan apply".

cat /etc/netplan/00-installer-config.yaml

# This is the network config written by 'subiquity'
network:
  version: 2
  renderer: NetworkManager
  ethernets:

Also, worth mentioning that /etc/netplan/00-installer-config.yaml file should have access rights/mode where others cannot read the file. So, you may want to:

chmod 600 /etc/netplan/00-installer-config.yaml
MaximAL
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user1602250
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2

With the references posted by @chili555 these steps enabled wired connections in my case:

  1. Install build-essential: sudo apt-get install build-essential
  2. Download the driver.
  3. Run the autorun script as root.
  4. Reboot.
Kulfy
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Nuss9
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1

This means there is no driver attached to your Ethernet Network Card. This can be solved by installing linux-backports.

Your problem has a solution here.

Success!

Justech
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1

Since none of these solutions worked for me I wanted to share what did.

I had modified the file /etc/network/interfaces

I had added code to make my connection DHCP and it appears to have caused this issue we all share here.

I removed everything from that file except for what was originally in there and rebooted my PC. Then magically my settings were all back to normal.

Hope it helps someone.

Cheers.

slyfox1186
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