[libvirt-users] Audio pass through

Hisao Taguchi hisao.taguchi at uniadex.co.jp
Tue May 10 05:23:39 UTC 2011

Hi, Michael

How about trying to set

vnc_allow_host_audio = 1

in the "/etc/libvirt/qemu.conf" file.

I'm using fedora14 as a KVM host and
running Windows XP guest and
this solved the sound problem.

Please refer to the folloing for details.



On 05/10/2011 01:45 PM, Mike Hall wrote:
> I'm running a RHEL6 as a development desktop with Fedora 14 (multimedia stuff) and Win XP (corporate email and calendars) running on it as KVM VMs. Everything runs great except for audio pass through.
> Audio works on the RHEL host. Both VMs see sound cards provided by the VM, but no sound is forthcoming.
> I have tried adding a PCI audio device from the physical host to the Fedora VM, but then it refuses to boot.
> I remember reading that physical hardware can only be passed through to VMs if it is not in use on the physical host.
> Any suggestions on how to get audio pass through happening?
> How can I get the host to "relinquish" the audio device so that a VM can use it?
> Thanks
> Michael Hall
> IT Communications Officer
> Alice Springs Town Council
> mhall at astc.nt.gov.au
> (08) 8950 0561
> _______________________________________________
> libvirt-users mailing list
> libvirt-users at redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users

田口 久雄
ユニアデックス株式会社 Linux/UNIXサービス部
Tel:050-3132-7676 (内線 840-27676)
E-Mail:hisao.taguchi at uniadex.co.jp

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