Basic usage silently fails

[raphaelbastide]

With Firefox Nightly (v111), I manage to see midi messages from my hardware without webmidi.js. But because it’s seams to be way easier to use the library to intercept them, I try to list inputs and outputs just like the basic page recommands.

WebMidi
  .enable()
  .then(onEnabled)
  .catch(err => alert(err));

function onEnabled() {
  console.log('test');
  
  // Inputs
  WebMidi.inputs.forEach(input => console.log(input.manufacturer, input.name));
  
  // Outputs
  WebMidi.outputs.forEach(output => console.log(output.manufacturer, output.name));

}

The result is: nothing really happens, except a security notice for midi access I accept. Then nothing is logged. If I console.log(WebMidi); I can see the object as expected (with inputs and outputs), but it seems the onEnabled() function is never called, and no error is caught. What do I miss?

[schoko11]

Hi, i think i came across something similar, where it seems to be some kind of problem with android(13) and firefox (109)...

did you use https?

[raphaelbastide]

[raphaelbastide]

The screenshot above shows I can log the Webmidi object but test never get logged.

[djipco]

Does it work with the regular Firefox (not the nightly) ?

[raphaelbastide]

No. Here is a screenshot with FF v.109.0.1. (Sorry for the screenshots, but I think that’s the best way to show you exactly what happens)

[raphaelbastide]

This issue was related to a Firefox installed on Linux using Snap. Snap installations mess with lots of system things, not an expert, but this should be known. If you encounter this problem, try installing FF / FF nightly with your distro’s package manager.