KVM Virtualization Configured, But Not Enabled

[Shinalaxy]

I'm a newbie to Linux and Linux commands, so if I'm getting things wrong please tell me. I have screenshots of my issue attached.

I'm doing a proxmox and OPNSense server for a cyber club, and I can't get KVM to work for my OPNSense VM.

• I've enabled VTX and VTD in BIOS
• I used this command to enable it in VirtualBox: cd 'C:\Program Files\Oracle\VirtualBox\' VBoxManage.exe modifyvm "<insert VM name>" --nested-hw-virt on
• I can only use OPNSense with KVM off, otherwise if on, VM doesn't start
  • This is an issue, as it's obviously super slow and a pain to configure OPNSense now
• I have enabled Nested Paging on in VirtualBox also, and left the Paravirtualization Interface on default
• When I run the root@proxmox:~# cat /sys/module/kvm_intel/parameters/nested command, I get "No such file or directory", so I can't even check if KVM is enabled or not
• My CPU is a 12 Gen Intel(R) Core (TM) i3-1215U
• I tried to follow the Proxmox Wiki page "Nested Virtualization"
• I use Virtual Box and Proxmox on my Acer Laptop, if that causes any problems? I haven't tried to move my config to desktop yet.

Any help would be greatly appreciated, I'm suffering right now trying to configure OPNSense, and I don't want to have to stay like this .·´¯`(>▂<)´¯`·.

 

[tnicholson]

You should try using journalctl to find any potential KVM errors. I remember having a similar issue (albeit on my Debian workstation with Proxmox installed directly on the host system) - KVM threw some errors related to the nested virtualization options. You can also use modprobe -r to reload any modules related to KVM (e.g. modprobe -r kvm_intel) once you have fixed any potential issues found in journalctl.

Edit: You will also need to update the initramfs and reboot to check if it works: update-initramfs -k all -u