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IDProjectCategoryView StatusDate SubmittedLast Update
0001949OpenMPTPlugins / VSTpublic2026-02-19 04:252026-02-19 04:25
Reporterh_laes Assigned To 
PrioritynormalSeverityminorReproducibilitysometimes
Status newResolutionopen 
Platformx64OSWindowsOS Version10
Product VersionOpenMPT 1.32.06.00 / libopenmpt 0.8.4 (current stable) 
Summary0001949: Redux VST only active when song is playing, playing notes in stopped state produces no sound
Description

Stopping song playback causes the Redux plugin to stop receiving line input (suspended?) and playing notes no longer reactivates it in the current version.

However it continues to receive MIDI input, and if Redux's own sampler is made to produce sound by creating a sample in it (even an empty sample works) it will become active again and receive line input normally.

Another quirk of the effect-instrument duality?

Steps To Reproduce

Tested on Redux versions 1.3.5+1.4.4 and freshly unpacked OpenMPT 1.32.06.00 portable:

  • add Redux to a project, go to "Effects" tab and load its "#Line input" internal plugin
  • assign it to a channel or instrument, make sure it produces back the sound that OpenMPT sends to it
  • stop playback by pressing ESC, F8 or F5, see how the plugin's input and output meters freeze
  • play some notes on the keyboard, either instrument tab or pattern editor works: no sound comes out of the plugin
  • start song playback: playing notes should work again

This bug's effects become more obvious if you disable Dry Mix from the plugin. Auto-suspend is obviously turned off.

My current workaround is either adding a quiet sample (in the plugin's "Waveform" tab) that activates from MIDI (instrument mode only...) or setting the playback state by playing a single row so the line stays open.

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Issue History

Date Modified Username Field Change
2026-02-19 04:25 h_laes New Issue