[vbox-dev] Question about audio in SVN

Andreas Löffler andreas.loeffler at oracle.com
Mon Sep 26 16:05:20 GMT 2016

Hi Perry,

your build environment should be fine -- this is indeed due to the audio 
work being done.

The VBOX_WITH_AUDIO_STABLE is not around anymore, as we removed it in 
favor of the new architecture now set as default.

The audio lag already is a known problem and we're working on that as 
soon as possible.

Thanks for the pointer though,


Kind regards / Mit freundlichen Grüßen

Andreas Löffler             | VirtualBox Engineering
Principal Software Engineer | Oracle Virtualization

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On 26.09.2016 15:09, Perry Halbert wrote:
> Greetings,
> Host is Linux 64-bit Debian based with any guest. Host audio is Pulse.
> I have been watching the work on the audio section and wonder if I have
> a build env issue or if it is just the work being done.  For some time
> now I have not been able to get the audio to work in guests when using
> AC-97 and with the Intel HD Audio I can get sound but the audio lags the
> video by .500.  I have tried enabling HPET but this has no effect. I was
> going to try adding VBOX_WITH_AUDIO_STABLE := 1 to LocalConfig.kmk but
> it looks like that has been eliminated.
> This is true with Web browser videos as well as watching a video on
> local LAN. VLC was where I was able to adjust the audio sync to find the
> .500 deviation.
> So the question is do I have an issue with my build env or is this just
> due to the work being done?
> Regards,
> Perry
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