Recently I wanted to use KVM on my Laptop which is running Ubuntu 20.04.2 LTS. And I run in to this error:
So it seems that KVM is a module built into the Linux kernel itself, but that doesn’t mean that you have all the dependencies included with your Ubuntu installation by default. So you need a few to get started and to install them you need to run this command:
sudo apt install qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virt-manager
Then re run KVM installation and everything should be installed without any issues.