Boot Ubuntu Server, my RPi had no IP address (I switched to using a monitor when doing a headless setup failed, and calling hostname -I returns a blank line), which I believe is the result of having no internet connection, further demonstrated by sudo apt update failing with every line saying temporary failure resolving ''.

Firefox will not access internet in Ubuntu 9.10 or 10.04 If Ubuntu won't connect at all, you will need to troubleshoot your network connection. If this works, and Firefox doesn't, then you need to check proxy and offline-mode setting in Firefox. To do this: I find that Chromium, Ubuntu updates are able to connect to internet fine and ping returns 100% success but Firefox just doesn't load Connecting to the Internet With Ubuntu Jan 20, 2020 Solve Ubuntu Error: Failed to download repository

Resolve Internet Connectivity Issues for EC2 Instances

Fix cannot connect to wired Internet problem in Ubuntu or The wired internet connection by default is configured properly in Ubuntu installation. We can directly dial-up via sudo pppoeconf, or connect to a cable which already on internet.But sometimes wired connection stop working because of kernel upgraded, installed a special program, or even something to do with wireless. Install Ubuntu desktop | Ubuntu

Install Ubuntu desktop | Ubuntu

XRPD will not connect if you’re already logon to the desktop with the account you wish to connect…. The solutions I have tested is to restart the Ubuntu desktop and not to logon…. Then click Connect to initiate the connection to XRDP server…. you should be warned … How To Connect To The Internet Using The Linux Command Line Feb 23, 2020 Setting up internet connection in Ubuntu - June 2011 Jun 18, 2011 Ubuntu network-manager internet connection sharing Jun 06, 2020