[Spice-devel] Favor - clue bat re audio/bugzilla/qemu

[Hans de Goede]

Hi,

On 10/14/2013 10:17 PM, Jeremy White wrote:
> My work on Opus came to a screeching halt while I tried to figure out
> why I could not record clean audio in qemu + a Fedora guest.
>
> What I've now found is that if I use soundhw ac97, things seem to work;
> but if I use soundhw hda, my recording playback is fairly mangled.
>
> That is, without any of my fancy new code, Spice + soundhw hda
> has trouble recording audio for me.
>
> I've debugged at the spice level and have persuaded myself that spice
> behaves right, and that the bug must be in qemu.
>
> So, questions:  is this already a known bug?

Not that I know of. You may want try building qemu with this patch first
though:
http://lists.nongnu.org/archive/html/qemu-devel/2013-10/msg01204.html

Which fixes a generic audio bug which I've recently found. Not sure if this
will help, but it is worth trying.

If that works it would be good if you could also try:
http://lists.nongnu.org/archive/html/qemu-devel/2013-10/msg01205.html

And check it does not cause any regressions.

> Should I file this
> with Spice or with qemu or both?

If it works with ac97 and not with hda then it sounds like a qemu bug to
me. What does your qemu cmdline look like ? AFAIK you need something like
this on there for HDA recording to work:
-device intel-hda -device hda-duplex

 > If qemu, where is the qemu bugzilla?

http://wiki.qemu.org/Contribute/ReportABug

Or send a mail to the qemu-devel list.

Regards,

Hans