I'm running Debian/Stable on an AMD64 system. I have a number of kvm/qemu virtual machines running on it, including Home Assistant and a Samba DC, along with multiple Windows VMs. Most of them are working fine.I vaguely remember an error message like this. I think it was because a module "pc-0.12" was either renamed or deprecated.
However I found a need to fire up an old Windows XP VM but I can't get it to start. I'm using virt-manager to do this on my Debian/Testing workstation, connecting to the VMs on the Debian/Stable server. When I open the VM (using the virt-manager gui) I get the error:
host does not support domain type kvm with machine "pc-0.12' for virtualization type 'hvm' with architecture 'x86_64'
I have two Windows XP VMs - 32bit and 64bit - and they both give the same message.
I haven't tried using the Windows XP VMs in years, so I have no idea when the problem originated. I do know at one point they worked.
Any ideas on what's going wrong and how to fix it?