Ubuntu Version
Ubuntu 26.04 LTS Flavors
Desktop Environment (if applicable)
KDE Plasma
Problem Description
After moving to ubuntu studio 26 from 24 (fresh install on a new computer), my Linnstrument in user firmware mode stopped working correctly. I works correctly both on my old computer with ubuntu studio 24 and raspi with patchbox.
In that mode Linnstrument sends on/off messages using channel to identify the row and note number for the column, velocity is velocity.
An example of the issue.
First, I press and hold keys 0, 2 and 1,1 meaning row, column.
Then tapping 1, 2 key results in somewhat erratic behavior. Sometimes it registers correctly, sometimes it registers as 0, 1. As far as I can tell keys that do not share coordinates with keys that are held behave correctly.
With more keys held, other erroneous row/column appear. The problem seems to be somewhat velocity sensitive, as light taps are more likely to register correctly than heavier ones.
This is output of amidi --port=hw:1,0,0 --dump:
90 02 60
91 01 60
90 01 60
80 01 05
91 02 60
81 02 19
91 02 60
81 02 06
91 02 60
81 02 0C
90 01 60
80 01 13
91 02 60
81 02 1D