[Pkg-libvirt-maintainers] Bug#857832: CPU type error

[Daniel Pocock]

Package: virt-manager
Version: 1:1.4.0-5
Severity: important


I installed virt-manager / libvirt / KVM for the first time on a stretch
system using the commands:


    apt-get install libvirt-doc virt-manager libvirt-clients virtinst
virt-top


downloaded the stretch ISO file debian-stretch-DI-rc2-amd64-netinst.iso
and tried to make a VM running on the local machine.

In the wizard, I selected 2 CPUs but everything else was left at the
defaults.

When I clicked to create the VM, a popup appeared with the error
"unsupported configuration: CPU mode 'custom' for x86_64 kvm domain on
x86_64 host is not supported by hypervisor'"

I clicked to edit the VM settings, went to the CPU tab and saw that it
had chosen Configuration, Model: SandyBridge

I clicked the checkbox "Copy host CPU configuration" and tried to build
the VM again and the error didn't appear again.  After that, I got a KVM
module permission denied error, I'm opening a separate bug report for that.