Article 3Z29P Running Ubuntu VMs on Windows just got a whole lot more streamlined

Running Ubuntu VMs on Windows just got a whole lot more streamlined

by
Peter Bright
from Ars Technica - All content on (#3Z29P)
vm-creator-800x474.png

Enlarge / Hyper-V Quick Create.

Microsoft and Canonical have been working for some time to make Ubuntu and Windows play nice with each other. Ubuntu was the first distribution supported in the Windows Subsystem for Linux, and now an Ubuntu image is available through Hyper-V Quick Create, which offers three-click creation of Virtual Machines.

The system image has Ubuntu Desktop 18.04 LTS configured and ready to go, and this showcases some of the other Linux integration work that Microsoft has been doing. The Hyper-V virtual machine client, Virtual Machine Connection, has two ways of working. The normal way is to display the output of the virtual video card that the virtual machine uses and, similarly, to emulate PS/2 mouse and keyboard input, as if the client were the physical hardware. This works with any operating system (the virtual video card supports rudimentary modes like VGA and the text mode used by DOS; it can also support high-resolution graphics modes when used with a suitable display driver). But it is relatively slow and inflexible.

The other way, used automatically with modern Windows VMs, is "Enhanced Session Mode." In an Enhanced Session, the virtual machine transmits a variation of RDP (Remote Desktop Protocol, Microsoft's protocol for Windows' Remote Desktop features) directly to the hypervisor, which then delivers it to the Hyper-V client. Enhanced Sessions have a number of advantages: you can resize the client window, and the VM is notified of the change of resolution; you can copy and paste between the virtual machine and the host; there's automatic sharing of folders between guest and host; and the mouse doesn't get trapped inside the client window.

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