Virtualbox enable nested vtx/amd-v greyed out

Question

On my Ubuntu 18.04, I\'ve installed VirtualBox 6.0 in order to have nested virtualization. Virtualization is

Answer 1

On VirtualBox 6.1.2 that worked (intel i7 2630QM)

(VBoxManage modifyvm lubuntu18 --nested-hw-virt on)