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[Bug 1071011] Re: specific device not available in client (passthrough) with high cpu load on host, none in client


Gerben, as per
http://www.asus.com/Motherboards/SABERTOOTH_990FX/#support_Download_8 an
update is available for your BIOS (1604). If you update to this, does it
change anything?

If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Thank you for your understanding.

** Tags added: bios-outdated-1604 needs-upstream-testing regression-

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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  specific device not available in client (passthrough) with high cpu
  load on host, none in client

Status in “linux” package in Ubuntu:
Status in “qemu-kvm” package in Ubuntu:

Bug description:
  I've got a specific device which is not always handed down to the kvm
  client showing a high cpu load on the kvm host. No cpu load shown in
  the client (win7).

  A few (two) times I saw this device working properly with no high cpu
  usage on the kvm host, but this was broken after a reboot of the KVM
  host in at least one time. Reboots of the client showed the device
  continue to work correctly multiple times before I rebooted the host.

  06:00.1 Audio device [0403]: Advanced Micro Devices [AMD] nee ATI
  Cedar HDMI Audio [Radeon HD 5400/6300 Series] [1002:aa68]

  If the device works correctly, a device is shown by the device manager
  within windows 7. If not no device is shown, while the host KVM
  process consumes all cpu cycles assigned to it (2 cpu's in this case)
  and the client shows not cpu power used.

  My guess this is specific to this device (a sound device on the
  graphics card, HD5440). The graphics device and an USB device in
  passthough both work without problems.

  When removing the sound device no high cpu usage is shown on the host.
  Adding the sound device again, high cpu usage is shown on the host.

  The host is a Quantal server installation.

  # lsb_release -rd
  Description:	Ubuntu 12.10
  Release:	12.10
  # apt-cache policy qemu-kvm
    Installed: 1.2.0+noroms-0ubuntu2
    Candidate: 1.2.0+noroms-0ubuntu2
    Version table:
   *** 1.2.0+noroms-0ubuntu2 0
          500 http://nl.archive.ubuntu.com/ubuntu/ quantal/main amd64 Packages
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: qemu-kvm 1.2.0+noroms-0ubuntu2
  ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
  Uname: Linux 3.5.0-17-generic x86_64
  ApportVersion: 2.6.1-0ubuntu3
  Architecture: amd64
  Date: Wed Oct 24 21:59:10 2012
  InstallationMedia: Ubuntu-Server 12.10 "Quantal Quetzal" - Release amd64 (20121017.2)
  MachineType: To be filled by O.E.M. To be filled by O.E.M.
   PATH=(custom, no user)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-17-generic root=UUID=58e57f77-7117-4eff-8162-47b465a72050 ro
  SourcePackage: qemu-kvm
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/12/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1102
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: SABERTOOTH 990FX
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1102:bd03/12/2012:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKCOMPUTERINC.:rnSABERTOOTH990FX:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To be filled by O.E.M.
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: To be filled by O.E.M.

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