I had everything working perfectly till yesterday night when today my Ethernet port stopped working all of a sudden. I did the following:
- Connected another laptop to the same LAN cable and LAN port combination: worked
- Connected the LAN cable with a Ethernet to USB adapter into my laptop's USB port: worked
Therefore, I can tell that the problem is with some settings in Ubuntu or with the Ethernet port in my laptop.
What can I do to fix this issue? I am using Ubuntu 18.04 on a similar laptop to this.