Output not working on Archlinux

[sensn]

Hello,

I can't get Output to send events on Archlinux(Chrome/Firefox). Input works fine ,I can recieve MIDI events from attached Device, but when I use playNote or sendCC i do not recieve the events on my device. Same code on Windows works. How can I fix this?

[djipco]

It is very hard for me to help you since I do not have this environment to conduct tests. Are you getting errors in the console or any form of hints that may help us help you?

[sensn]

Midi devices show up and work. In browser console no error, pure webmidi implementation of test alsay cant send but recieve,

cat proc/asound/seq/clients 

Client   0 : "System" [Kernel Legacy]
  Port   0 : "Timer" (Rwe-) [In/Out]
  Port   1 : "Announce" (R-e-) [In]
    Connecting To: 128:0
Client  14 : "Midi Through" [Kernel Legacy]
  Port   0 : "Midi Through Port-0" (RWe-) [In/Out]
    Connecting To: 128:0
    Connected From: 129:0
Client  24 : "SAMSUNG_Android" [Kernel Legacy]
  Port   0 : "SAMSUNG_Android MIDI 1" (RWeX) [In/Out]
    Connecting To: 128:0
    Connected From: 129:1
Client 128 : "Chrome (input)" [User Legacy]
  Port   0 : "port-0" (-w--) [Out]
    Connected From: 0:1, 14:0, 24:0
  Input pool :
    Pool size          : 200
    Cells in use       : 0
    Peak cells in use  : 6
    Alloc success      : 19
    Alloc failures     : 0
Client 129 : "Chrome (output)" [User Legacy]
  Port   0 : "port-0" (r---) [In]
    Connecting To: 14:0
  Port   1 : "port-1" (r---) [In]
    Connecting To: 24:0

[djipco]

Could you run this code in your environment and report with the results? It sends a note on message (middle C, full velocity) to all outputs using the bare Web MIDI API:

function onMIDISuccess(midiAccess) {
  console.log("MIDI ready!");
  midiAccess.outputs.forEach(o => o.send([0x90, 60, 0x7f]));
}

navigator
  .requestMIDIAccess()
  .then(onMIDISuccess, msg => `MIDI error: ${msg}`);

[djipco]

Since it's been 3 weeks and I haven't heard back, I will close this issue. @sensn Feel free to reopen if the bare Web MIDI API example from above does work in your environment.