[Ardour-Users] ardour 5.12 crashes, probably MIDI related?
Robin Gareus
robin at gareus.org
Thu Mar 14 07:45:56 PDT 2019
On 3/14/19 2:30 PM, m.eik michalke wrote:
[..]
> disabling and will not be saved
> fluidsynth: warning: No preset found on channel 0 [bank=0 prog=9]
> fluidsynth: warning: No preset found on channel 0 [bank=0 prog=9]
> fluidsynth: warning: No preset found on channel 0 [bank=0 prog=17]
> fluidsynth: warning: No preset found on channel 0 [bank=0 prog=17]
> fluidsynth: warning: No preset found on channel 9 [bank=128 prog=0]
> fluidsynth: warning: Ignoring sample Ahh C3 L: too few sample data points
> Speicherzugriffsfehler
We've had similar reports with broken .sf2 files, in particular some
from https://sites.google.com/site/soundfonts4u/ on IRC.
In some cases a work-around was to remove the symlink to the .sf2 in
from the session's externals folder (and re-load the .sf2 later).
> can a SF2 file crash ardour? what else could it be?
Yes, it may crash the plugin which in turn crashes Ardour.
It seems to have been a memory-corruption in libfluidsynth as follow up
to "too few sample data points".
In any case this issue was likely already fixed in recent fluidsynth-2.0.
> how do i debug this?
Debugging these things is usually hard, there's a chance that you can
catch this directly with gdb, other than that running a debug-build (of
the plugin) in valgrind may point to the issue.
For the case at hand, looking at debug printed messages, and reading
code is probably easiest.
> just for the record, i had the strangest thing happening to me with this
> particular ardour project, when a few nights ago i stopped the transport from
> playing: one MIDI channel suddenly began to "play" some pretty weird stuff
> with what sounded like a chamber orchestra of random instruments.
Maybe a sf2 virus?!
> it went on
> for about 15 minutes and then silently came to an end. i grabbed my phone to
> record it directly from my headphones, as i didn't want to touch any controls
> and accidently stop the mysterious auto-composition. here's the final 13
> minutes of "ardour being idle":
> http://angstalt.de/stuff/ardour/ardour_MIDI_spill.opu
Wow, how avantgarde! I like this one better than those AI trying to use
deep learning to compose :)
Cheers!
robin
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