# Revision history [back]

Hi Guys,

I didn't really found the solution, I went deep down, at kvm/qemu level, checked the logs, compare kvm-qemu process with a working plateform, nothing ! It's not my field, maybe I didn't see the obvious.

By despair, I ran a 'rpm -qa | grep openstack', and realized that I was using an old version of openstack (liberty) with a brand new version of packstack.

So instead of liberty I installed newton and everything went smoothly.

Like Luis I have already installed liberty some month ago on the same type of vm, and by default I had a cirros image created and no difficulty to create a cirros vm.

By chance I saw this message in my console:

[ xxxx] microcode: CPU0 update to revision 0x38 failed
[ xxxx] microcode: CPU1 update to revision 0x38 failed
[ xxxx] microcode: CPU2 update to revision 0x38 failed
[ xxxx] microcode: CPU3 update to revision 0x38 failed


Coincidence ? Maybe ... I have no other clue, I'm running out of time so I will simply switch to newton.

Thanks for you help. Charles.