Comment 0 for bug 1346430

Eachtime I'm trying to start VM through Virtual Machine Manager an error window appears:

Error during domain starting: internal error: Cannot find suitable CPU model for given data

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 96, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 117, in tmpcb
    callback(*args, **kwargs)
  File "/usr/share/virt-manager/virtManager/domain.py", line 1162, in startup
    self._backend.create()
  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 866, in create
    if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: internal error: Cannot find suitable CPU model for given data

The workaround found is to run:

sudo dpkg-reconfigure libvirt-bin
libvirt-bin stop/waiting
libvirt-bin start/running, process 16631
Setting up libvirt-bin dnsmasq configuration.

After this VM starts running. But till nest system restart. After restarting computer I must run dpkg-reconfigure again to make VM starting.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: libvirt-bin 1.2.2-0ubuntu13.1.1
ProcVersionSignature: Error: [Errno 2] Немає такого файла або каталогу: '/proc/version_signature'
Uname: Linux 3.15.6-031506-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: KDE
Date: Mon Jul 21 20:47:56 2014
InstallationDate: Installed on 2014-06-08 (43 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
SourcePackage: libvirt
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.libvirt.qemu.conf: [inaccessible: [Errno 13] Відмовлено у доступі: '/etc/libvirt/qemu.conf']