[ardour-users] Ardour zombifies when idling (after playback with freeverb plugin)

[Tom Szilagyi]

On Fri, Jan 21, 2005 at 12:48:09AM +0000, Neil Klepeis wrote:
> Has anyone else had a problem with using freeverb and having ardour 
> zombify _after_ playback has stopped?   Could this be an ardour-specific 
> problem?  If so, I'll submit an issue report.
> 
> [...]
> 
> But, approximately 10-20 seconds _after_ playback is stopped at any 
> point in the track, hundreds of xruns occur and ardour is zombified from 
> jackd -- shutting down ardour and locking the gui.  Ardour is idle when 
> the crash occurs.  I watch the DSP % rise steadily before zombification 
> at around 80-90%.  The crash only occurs _after_ a playback event has ended.
> 

Rest assured that this *is* the definitive denormal bug.
Go submit a bugreport to the author of the plugin.
Ardour is absolutely innocent in this case.

> Using the TAP reverb plugin instead of freeverb is OK.  This isn't a 
> denormal problem, is it?  I haven't seen anything on any of the lists 
> about CMT freeverb having problems in general.    It's funny that the 
> problem occurs when ardour is just sitting there doing nothing.   Also: 
> I can use freeverb in Muse/Rosegarden etc. and it seems OK.

Denormal problems are usually quite machine-dependent, so I can
imagine that nobody ran into it with freeverb before.

Good luck,

Tom