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

[Neil Klepeis]

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.

Some details:

I have latest ardour-0.9beta24 compiled from scratch on a 
FC1/planetCCRMA system and latest LADSPA/CMT plugins.  [compiled with 
--enable-vst, but called with "ardour -V" since ardour crashes when 
trying to load VST plugins...a different issue]

I have only a single track of audio with a mono-to-stereo plugin 
followed by freeverb (2in/2out).  The playback is fine all the way 
through the 2-3 min piece.

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.

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.


--Neil