[Scummvm-tracker] [ScummVM :: Bugs] #13889: ScummVM hangs/crashes on game start with real MT-32 over USB MIDI

[ScummVM :: Bugs]

#13889: ScummVM hangs/crashes on game start with real MT-32 over USB MIDI
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Reporter:  bleggett  |      Owner:  (none)
    Type:  defect    |     Status:  new
Priority:  normal    |  Component:  Audio: MT32
 Version:            |   Keywords:
    Game:            |
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 I've built an MT-32 Pi (uses Munt internally, but presents as a normal
 MIDI device) https://github.com/dwhinham/mt32-pi - which I'm connecting to
 my PC via a Roland UM-ONE Mk 2 USB MIDI interface.

 This combo works perfectly for both Dosbox and Exult - they see it as an
 external real MT-32, and everything (from CM-32 sounds to Sysex) works
 just fine.

 However, ScummVM (daily build as of this issue creation date) crashes on
 startup if I tell it to use this device as a "real" MT-32. It will send
 MIDI to the device just fine as a generic GM MIDI device, but it will hang
 on every game if I try to use MT-32 mode specifically.


 I get no console errors - just a hang on engine load. Disabling MT-32  and
 using GM stops the hang (but naturally produces incorrect sounds for MT-32
 games).

 Again - only ScummVM has this problem, so I think this is an issue with
 ScummVM and external "real" MT-32s over USB specifically.
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Ticket URL: <https://bugs.scummvm.org/ticket/13889>
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