I have a problem with the way that Rosegarden is interacting with
Fluidsynth, and I would welcome any help or at least further debugging
suggestions.
tldr: Rosegarden appears to be asking, via fluidsynth-dssi, for an
obsolete version of Fluidsynth, and failing to load it as a result.
For a few years, I've had a stable Rosegarden environment working
happily with Fluidsynth on Ubuntu 16.04:
- rosegarden 15.12.1
- fluidSynth 1.1.6
- fluidSynth-dssi 1.0.0
- libfluidsynth 1.1.6
I'm now building a new machine under Ubuntu 20.04, and have installed
latest versions of everything:
/dorien@dorien-M4500:~$ dpkg -l | grep "rosegarden"/
ii *rosegarden * 1:*19.12**-1build1 *
amd64 music editor and MIDI/audio sequencer
/dorien@dorien-M4500:~$ dpkg -l | grep "fluid"/
ii fluid-soundfont-gm 3.1-5.1 all
Fluid (R3) General MIDI SoundFont (GM)
ii *fluidsynth * *2.1.1**-2 * amd64 Real-time MIDI software
synthesizer
ii fluidsynth-dssi 1.0.0-7 amd64
DSSI wrapper for the FluidSynth SoundFont-playing synthesizer
ii libfluidsynth2:amd64 2.1.1-2
amd64 Real-time MIDI software synthesizer (runtime library)
ii qsynth 0.6.1-1build1 amd64 fluidsynth
MIDI sound synthesiser front-end
When I run Rosegarden from terminal, the messages include:
[JackDriver] initialise() - connecting from " rosegarden:master out L "
to " system:playback_1 "
WARNING: DSSIPluginFactory::discoverPlugin: *couldn't dlopen
/usr/lib/dssi/fluidsynth-dssi.so - libfluidsynth.so.1*: cannot open
shared object file: No such file or directory
[JackDriver] initialise() - connecting from " rosegarden:master out R "
to " system:playback_2 "
Once in Rosegarden, Fluidsynth doesn't work:
- it's not listed on the list of Plugins on the Synth plugin window
- if I load a .rg file including Fluidsynth instruments from my old
environment, there's an error window "The following audio plugins could
not be loaded: FluidSynth-DSSI"
*/usr/lib/dssi/fluidsynth-dssi.so *exists in both environments.
However, the directory */usr/lib/x86_64-linux-gnu* on my old, working
environment contains a file *libfluidsynth.so.1* which appears to be a
link to *libfluidsynth.so.1.5.2*
The same directory on my new environment contains *libfluidsynth.so.2*
linking to *libfluidsynth.so.2.3.1 *
So, as far as I can tell, either Rosegarden or fluidsynth-dssi is
expecting to use libfluidsynth.so.1, but this no longer exists.
Views gratefully received on where the problem might lie and how I might
fix it.
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