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Re: [Xen-devel] VGA Passthru HW upgrade

On Wed, Jan 25, 2012 at 09:26:45AM +0100, Pavel Mateja wrote:
> > I can't hear sound in DomU. Hmm, to be honest I've heard some broken
> > pieces,..
> Problem found:
> You can't load linux ALSA driver before you pass the sound card to the 
> virtual 
> machine. Since I removed linux kernel driver Windows play sounds just fine.

Thanks for the update. And that's quite obvious reason..
naturally you can't use a single PCI device in multiple domains at the same 

PCI passthru *dedicates* the device to specific domain, so it can only be used 
in that domain.
If dom0 is trying to use it aswell, things will go wrong.

-- Pasi

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