[ardour-dev] mixdown woes

Pete pdl at everis.net
Tue Dec 14 14:02:16 PST 2004

On Tue, 14 Dec 2004 at 12:42:37 +0100, Tom Szilagyi <st444 at hszk.bme.hu> wrote:
> On Tue, Dec 14, 2004 at 11:26:08AM +0100, Christian Schumann wrote:
> [...]
> > second:
> >   while mixdown (recording master->extra stereo track), using plugins
> >   (SC1, TAP Reverb, TAB EQ, Tim Goetzes' tube preamp, jamin 0.9.17),
> >   everything works ok. But when I press stop to finish the recording,
> >   jackd shows thousands of xruns or crashes completely.
> This sounds like a denormal problem in one of the plugins you use; it
> is a fairly well known issue and not Ardour's fault. I would suggest a
> search in the ardour-users list archives, as some more detailed
> explanations about it were posted there not so long ago. I for one
> wrote a note on this issue on Sun, 7 Nov 2004,
> Re: [ardour-users] problem with Ardour, DSP creeps up to 100%.

I had this problem with the tube-preamp plugin from Tim Goetze's 
caps plugin suite. It's fixed in the latest release (0.2.0), which added
denormal protection for this and one other  plugin.

- Pete.

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