Public bug reported:

Host
Ubuntu 11.04 Natty 64 Bit server + kde desktop + KVM + libvirt + virtmanager

Guest
Ubuntu 12.04 Precise 64 Bit server + kde desktop

In guest, if vmvga virtual video card is used the sytem crashes at login attempt
If I use the cirrus or vga virtual video card the system works perfectly

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-23-generic 3.2.0-23.36
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
ArecordDevices:
 Home directory /home/sysop not ours.
 **** List of CAPTURE Hardware Devices ****
 card 0: AudioPCI [Ensoniq AudioPCI], device 0: ES1370/1 [ES1370 DAC2/ADC]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  sysop      2770 F.... pulseaudio
CRDA: Error: [Errno 2] File o directory non esistente
Card0.Amixer.info:
 Card hw:0 'AudioPCI'/'Ensoniq AudioPCI ENS1370 at 0xc200, irq 11'
   Mixer name   : 'Asahi Kasei AK4531'
   Components   : 'AK4531'
   Controls      : 43
   Simple ctrls  : 15
Date: Tue Apr 24 11:10:08 2012
HibernationDevice: RESUME=UUID=ed04c86d-fc80-4897-8541-db50664f48a7
InstallationMedia: Ubuntu-Server 12.04 LTS "Precise Pangolin" - Beta amd64 
(20120327)
Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Bochs Bochs
ProcEnviron:
 LANGUAGE=it_IT
 TERM=xterm
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-23-generic 
root=/dev/mapper/hostname-root ro
PulseList:
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory 
/home/sysop not ours.
 No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-23-generic N/A
 linux-backports-modules-3.2.0-23-generic  N/A
 linux-firmware                            1.79
RfKill:
 
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2007
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: 
dmi:bvnBochs:bvrBochs:bd01/01/2007:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr:
dmi.product.name: Bochs
dmi.sys.vendor: Bochs

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise

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https://bugs.launchpad.net/bugs/987715

Title:
  In KVM In a virtual machine, system crashes if vmvga video card is
  used

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