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IDProjectCategoryView StatusLast Update
0010156ardourbugspublic2026-02-06 15:44
Reporterbzub Assigned Topaul  
PrioritynormalSeveritymajorReproducibilityalways
Status acknowledgedResolutionopen 
PlatformArchOSLinuxOS Version(any)
Product Version9.0 
Summary0010156: Launchkey Mini MK4 DAW integration only works with new sessions
DescriptionI recently acquired a Launchkey Mini 37 MK4 after using the Launchpad Pro for a while. The DAW integration doesn't seem to work with my existing Ardour sessions that I've tried so far. Holding "Shift" on the launchkey the "DAW" pad among others doesn't light up. The Launchkey is detected and checked in the Control Surfaces settings, though. I checked for differences in the settings between sessions and saw none in mini connections, etc.

For some reason after some use this behavior impacted new sessions as well until I wiped my ~/.config/ardour9 directory.

It seems that if I use the Launchpad Pro, it still works fine in all cases.
Steps To Reproduce1. Load an existing Ardour session (that was previously used with Launchpad Pro).
2. Plug in Launchkey.
Tagscontrol surface

Activities

bzub

2026-02-05 21:18

reporter   ~0029827

When I switch the Audio System to ALSA, save, and reload the session, then the DAW integration works. Not sure why it's different for launchpad vs launchkey.

bzub

2026-02-05 23:17

reporter   ~0029829

Using ALSA for the audio system in Ardour does funky think with sound for the rest of my system outside of Ardour. It's odd that using Pipewire/Jack for the audio system works fine in a new session, DAW integration and everything.

paul

2026-02-06 01:08

administrator   ~0029831

There are bugs in the Pipewire JACK MIDI implementation that make is unusable for control surface support at this time (not just the Launchkey).

bzub

2026-02-06 04:08

reporter   ~0029832

Dang. I'd been using it since I started using ardour a couple years ago.

peder

2026-02-06 07:07

reporter   ~0029835

Any program that's using ALSA directly blocks access from every other program trying to play sounds, so the funkiness is as designed.
That's one of the reasons things like JACK were created; to be able to multiplex audio sources.

bzub

2026-02-06 15:44

reporter   ~0029838

Right on. For now I can try to switch from pipewire to JACK, or move my old music into new sessions to work around it.

Issue History

Date Modified Username Field Change
2026-02-05 16:38 bzub New Issue
2026-02-05 16:38 bzub Tag Attached: control surface
2026-02-05 21:18 bzub Note Added: 0029827
2026-02-05 23:17 bzub Note Added: 0029829
2026-02-06 01:08 paul Assigned To => paul
2026-02-06 01:08 paul Status new => acknowledged
2026-02-06 01:08 paul Note Added: 0029831
2026-02-06 04:08 bzub Note Added: 0029832
2026-02-06 07:07 peder Note Added: 0029835
2026-02-06 15:44 bzub Note Added: 0029838