MIDI Track Keyboard not work

Hello, I need help! I’m having problems displaying the keyboard that appears at the beginning of the track.

I add the MIDI track normally, but when I expand it to display the keyboard, the program closes unexpectedly, and so it always is, I don’t know if this would be an option or a bug, my pc is Ubuntu 20.04.2 LTS x86_64

Thank you all!

Which version of Ardour is that (Ardour > Menu > Help > About)?

Is that Ardour from Ubuntu, or from http://ardour.org/download.html

Also which synth-plugin are you using on the MIDI track?

The version is: Ardour 5.12.0

I installed the program directly from the ubuntu store, and the plugin, only has these two being used (I’m still new to the program)

Captura de tela de 2021-05-16 00-14-47

Looks like “Reasonable Synth”.

In any case this issue is unusual, I don’t have any immediate idea why this would or how this could cause Ardour to crash.

Perhaps try a recent version of Ardour 6.6. from https://nightly.ardour.org/ (demo is fine, can be installed in parallel to Ubuntu’s version) to rule out that this isn’t something specific to the Ubuntu version and/or your system.

I installed version 6.6, but the problem continues, I can’t expand the midi track to the point where the keyboard appears, it crashes before :frowning:

the terminal showed this error message before installation:

System failed the quick sanity check… Looking for the cause

!!! WARNING !!! - Your system seems to use frequency scaling.
This can have a serious impact on audio latency.
For best results turn it off, e.g. by choosing the ‘performance’ governor.

Press ENTER to continue:

Cleaning up

!!! Install Complete !!!

I don’t know if it can have anything to do …

With Ardour 6. You can also use Menu > WIndow > Virtual Keyboard to play.

This is a mystery. Never heard of an issue like this before, especially not one that happens in both Ardour 5 and 6.

A backtrace (see Debugging Ardour) might shed some light.

In short start Ardour inside a debugger:

/opt/Ardour-6.6.546/bin/ardour6 --gdb

then inside gdb: run <press enter> and when it crashes: bt <enter> copy & paste the result here on tracker.ardour.org

I started ardor in debug mode, when it crashed when expanding a MIDI track, the terminal went crazy showing this snippet:

Captura de tela de 2021-05-16 12-59-10

this was the departure of “bt”

Thread 1 “ArdourGUI” received signal SIGTRAP, Trace/breakpoint trap.
0x00007ffff2f15278 in g_logv () from /opt/Ardour-6.6.542-dbg/lib/libglib-2.0.so.0
(gdb) Quit

where do I paste on http://tracker.ardour.org/?

Edit: it looks like someone has already reported this bug, but I can’t find any answers.


1 Like

instead of leaving, could you run

(gdb) bt


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