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[孙玉新 <dragonetail@xxxxxxxxx>]

Davide,

If you use KVM, it"s possible to enable audio.
Please refer  http://libvirt.org/formatdomain.html#elementsSound

Here is some infomation about how to enable it in nova:
 http://www.gossamer-threads.com/lists/openstack/operators/21302

Haven't test it, I think the steps should be:
1. cp /usr/lib/python2.7/dist-packages/*nova*/virt/libvirt.xml.template
/etc/*nova/*
2. add next line to *nova*.conf
--*libvirt_xml_template*=/etc/*nova*/libvirt.xml.template
3. Edit /etc/*nova*/libvirt.xml.template, add the following lines:

 <devices>
    <sound model='ich6'>
      <codec type='micro'/>
    <sound/>
  </devices>

Hope this is helpful.

Joey.


在 2013年1月11日星期五，Davide Guerri 写道：

> Daniel,
> let me explain what I'm trying to do.
> I'm trying to setup a simple virtual desktop infrastructure on the top of
> OpenStack using both Windows (7 only atm) and Linux guests.
>
> On Linux the missing audio board wouldn't be a problem since I'm planning
> to use freeNX or x2go that in turn use an esound remote tcp connection
> through ssh.
> For windows guests (which I'm not an expert on) without an audio card
> installed I'm facing the following problem: for some remote desktop clients
> (CORD on OsX and Mocha RDP on iOS, for instance) seems there is no way to
> enable sound if the guest isn't configured with an audio card. Other rdp
> solutions (like the Microsoft RDC on OsX) use a "remote audio" device that
> make audio output work but there is no way to "enable" audio recording.
> A sound board like ich6 makes audio works as expected.
>
> In order to have a working simple VD solution I'll try to hack the code of
> nova to add a sound card.
>
> Thanks again,
>  Davide.
>
>
>
>
> On 11/gen/2013, at 12:59, Daniel P. Berrange <berrange@xxxxxxxxxx<javascript:;>>
> wrote:
>
> > On Fri, Jan 11, 2013 at 12:29:35PM +0100, Davide Guerri wrote:
> >> Hi all,
> >> it's possible to add an audio card to the domain definition when using
> libvirt/kvm?
> >> If yes, how it can be done?
> >>
> >> I'm using the Folsom release.
> >
> > No, there isn't any support for audio devices in Nova / libvirt at this
> > time. How were you anticipating using it. Outputting via the host sound
> > card doesn't make sense, and I don't believe noVNC supports the VNC
> > audio extension. AFAIK, gtk-vnc is the only common VNC client supporting
> > audo, and that doesn't support the websockets tunnelling.
> >
> > So even if we allowed audio devices, I'm not clear how you'd make use of
> it ?
> > If you can show how it'd be useful, adding audio devices is an easy RFE
> to
> > take care of
> >
> > Daniel
> > --
> > |: http://berrange.com      -o-
> http://www.flickr.com/photos/dberrange/ :|
> > |: http://libvirt.org              -o-
> http://virt-manager.org :|
> > |: http://autobuild.org       -o-
> http://search.cpan.org/~danberr/ :|
> > |: http://entangle-photo.org       -o-
> http://live.gnome.org/gtk-vnc :|
>
>
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