Thank you for your answer. I try to install Ulteo (http://www.ulteo.com/) with one Linux Application Server and one Windows Application Server and i need audio support on Windows APS. On, Linux the audio works ok, but on Windows 2008 Server, the device is detected but the driver is not working very well. So, i think i don't need Spice work for do that, but i will ask on spice list if they have some experiences with Windows audio drivers. Thank you again. Best Regards, -- Carlos Rodrigues <cmar@eurotux.com> Engenheiro de Software Sénior Eurotux Informática, S.A. | www.eurotux.com (t) +351 253 680 300 On Tue, 2013-05-28 at 14:33 -0600, Eric Blake wrote:

On 05/28/2013 11:06 AM, Carlos Rodrigues wrote:

...

Hello,

I am trying to put the audio audio work on Windows 2008 Server with 64bits but without success.

I have tested with sound model ac97 and hda, and i always get the same error: the devices appears on Windows Device Manager with following message - "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)".

I have qemu-kvm 1.2 and libvirt 0.10.2.

I also tried different drivers with different sound model combinations but no success.

Any suggestion of drivers that can i use and how can i get audio device working?

Have you considered using SPICE for your audio? Personally, I haven't tried audio passthrough to my one windows guest, so I don't have many ideas; it may be better to ask on spice lists, precisely because that's where you will find more developers that actually play with that sort of thing.