Hello, I am having troubles with libvirt on Fedora 21 alpha. On virt-manager: Unable to complete install: 'internal error: Cannot find suitable CPU model for given data' Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/asyncjob.py", line 89, in cb_wrapper callback(asyncjob, *args, **kwargs) File "/usr/share/virt-manager/virtManager/create.py", line 1854, in do_install guest.start_install(meter=meter) File "/usr/share/virt-manager/virtinst/guest.py", line 411, in start_install noboot) File "/usr/share/virt-manager/virtinst/guest.py", line 475, in _create_guest dom = self.conn.createLinux(start_xml or final_xml, 0) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3361, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: internal error: Cannot find suitable CPU model for given data On "systemctl status libvirtd" I can see: Nov 04 10:23:41 lappie.mkeder.com libvirtd[3822]: Preferred CPU model Westmere not allowed by hypervisor; closest supported model will be used Nov 04 10:23:41 lappie.mkeder.com libvirtd[3822]: internal error: Cannot find suitable CPU model for given data I can't create the VM using any CPU configuration on virt-manager. Intel VT is enabled on the BIOS. This is a Lenovo Thinkpad t410 that I got yesterday. CPU is Intel(R) Core(TM) i5 CPU M 520 [root@lappie matias]# virsh -r capabilities | grep model <model>Westmere</model> I haven't tried Fedora 20 on it but I might re-install it soon. Just wanted to give my feedback for Fedora 21. [root@lappie matias]# rpm -q libvirt-daemon libvirt-daemon-1.2.9-4.fc21.x86_64 [root@lappie matias]# rpm -q virt-manager virt-manager-1.1.0-3.git310f6527.fc21.noarch Doing a google search it seems that some people had the same problem a few months ago and they solved but by updating. Seems to be some sort of problem between libvirt and qemu-kvm. Regards Matias