LMMS / LMMS/lmms

Automation of Microtuner ComboBoxes causes crash

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bug master branch needs clarification
Dominant language
C++
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Description

System Information

Arch Linux

LMMS Version(s)

1.3.0-alpha.1.575+gbda042e1e (Linux/x86_64, Qt 5.15.13, GCC 13.2.1 20230801).

Most Recent Working Version

No response

Bug Summary

In the Microtuner configuration window, Scales and Keymaps dropdown boxes can be connected to controllers/automation, but lmms crashes the moment a change in value happens. Related to #2382 and #2399.

Expected Behaviour

It probably just shouldn't be possible to do in the first place.

Steps To Reproduce
  • Add an LFO controller
  • Open Scales and keymaps from the Edit menu
  • Right click on any of the dropdown boxes on the top and connect it to the controller
Logs

No response

Screenshots / Minimum Reproducible Project

No response

Please search the issue tracker for existing bug reports before submitting your own.
  • I have searched all existing issues and confirmed that this is not a duplicate.

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the crash from the Microtuner configuration window using an LFO controller, then trace the Scales and keymaps dropdown boxes and their automation connection handling. Done means changing the controller no longer crashes LMMS and the dropdowns cannot be connected to automation if that is the intended behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
desktop
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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