Comment 1 for bug 795717

64Bit Centos and RHEL work fine, this system worked fine until I ran a dist upgrade from 10.10 yesterday. I have also tried to boot CENTOS 5.6 x86 on a clean 11.04 install and it locks up.

I have tried all of the compatible CPU emulation types in virt-manager also.

from /var/log/libvirt/qemu/

LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-0.12 -cpu core2duo,+rdtscp,+pdpe1gb,+dca,+xtpr,+tm2,+est,+vmx,+ds_cpl,+pbe,+tm,+ht,+ss,+acpi,+ds -enable-kvm -m 8192 -smp 6,sockets=6,cores=1,threads=1 -name ebspatchapp -uuid 30078a69-9e54-ac48-de57-3e3d9111ea3f -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/ebspatchapp.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=readline -rtc base=utc -boot order=dc,menu=off -drive file=/dev/usebskvm004/ebspatchapp_root,if=none,id=drive-virtio-disk0,boot=on,format=raw -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 -drive file=/var/lib/libvirt/images/LinuxISOs/ubuntu-8.04-server-i386.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive file=/dev/usebskvm004/ebspatchapp_a01,if=none,id=drive-virtio-disk1,format=raw -device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,id=virtio-disk1 -netdev tap,fd=18,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:79:09:29,bus=pci.0,addr=0x3 -usb -vnc 127.0.0.1:0 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6
kvm: -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:79:09:29,bus=pci.0,addr=0x3: pci_add_option_rom: failed to find romfile "pxe-virtio.bin"