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Created March 27, 2020 00:43
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Serverfault libvirt kvm https://serverfault.com/q/1002043
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!answer.md

I was having some trouble with libvirt on a Chromebook that supports /dev/kvm passthrough after installing virt-manager and the other packages and what finally fixed it was using sudo apt update && sudo apt upgrade -y and upgrading to Debian Buster 10.3 (I was on 10.2) and then sudo gpasswd -a $USER libvirt and sudo gpasswd -a $USER kvm and then quitting my shell and logging out and then when I logged back in I ensured that I was in the right groups by running id. It turns out that for some reason the kvm group doesn't stick, but running sudo gpasswd -a $USER kvm; newgrp kvm gives you a shell where you can run qemu-system-x86_64 and then I didn't have any further warnings or permissions issues from virt-host-validate. sudo apt install cpu-checker also let me run sudo kvm-ok to validate that the system was KVM ready.

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