Polkit Password-Less Access for the 'Libvirt' Group | Cole Robinson
Fleeting- Référence externe : https://blog.wikichoon.com/2016/01/polkit-password-less-access-for-libvirt.html
Polkit password-less access for the ’libvirt’ group | Cole Robinson
So just add your user to the libvirt group and enjoy passwordless virt-manager usage:
usermod –append –groups libvirt $(whoami)