(May 31, 2020) Multipass is an excellent tool for running Ubuntu on macOS or Windows laptops. Out of the box it does not enable passwordless SSH access to the Ubuntu instance, and instead you use the multipass shell command. Sometimes you need passwordless SSH access, however.
(May 3, 2020) Multipass is an excellent tool for running Ubuntu instances on a host system. Builds are available for Linux, macOS and Windows, and it is claimed to work well on all three. In my case, I spent three days solid trying to launch an Ubuntu instance and nearly gave up in frustration. But I found a simple problem, with a simple solution, and along the way learned about Hyper-V, WSL2, and other deep stuff about Windows.
(April 18, 2020) Even though macOS has an excellent command-line environment, we sometimes need to run a real Linux system. Multipass is an excellent way to run Ubuntu on macOS (or Windows, for that matter) but it doesn't easily support running a Linux desktop. In this article we demonstrating setting up a VNC server on a Multipass Ubuntu instance, and displaying it on the macOS desktop using a VNC viewer. The same techniques should work on Windows, and even with a remote Ubuntu VPS on a cloud hosting provider.
(December 10, 2019) Sometimes we need to run a Linux GUI application but do not have a graphics display on that computer. The X11 protocol lets us display the application remotely, and Canonical's Multipass application lets us manage Ubuntu instances in a lightweight virtual machine on Mac OS X or on Windows. Maybe we have a Linux GUI app that hasn't been ported to Mac OS X, we can run it inside a virtual Ubuntu instance and with XQuartz display it on the Mac desktop.