Unable to determine Ethernet configuration on Ubuntu system
Unable to determine Ethernet configuration on Ubuntu system
You're just starting with Ubuntu and setting up a NAS. Your Ethernet cable seems fine, but when you connect it to your computer, it doesn't work. You mentioned the network info shows an RTL8125 controller, which is from Realtek. The other network has similar details but different settings. Since you're not sure what's wrong, it might help to check if your Wi-Fi adapter is properly recognized or if there are any driver issues. You could try updating your network drivers or consulting the manufacturer's support page for your motherboard model.
The problem lies with the network card. Since the drivers are updated, I suggest trying a newer Linux distribution, such as Fedora 33 on Ubuntu 20.10.
Install the required driver for that interface. Refer to the suggestion at the provided link for further guidance.