Unable to communicate with MIDI hardware

[ttshaw1]

Hi,

I'm running Firefox 89.0 on Linux and am trying to get MIDI working. I've installed the Web MIDI API and Jazz-MIDI extensions, as well as Jazz-Plugin.

My goal is to be able to use Firefox to control my guitar pedal through this project , which allows effects to be set up in a browser page and the pedal programmed via MIDI; as of right now it seems that Firefox won't communicate with MIDI devices. The same is true when checking this page with either my pedal or MIDI controller keyboard plugged in. The MIDI Data Log only says "Initializing MIDI..."

I can see the extensions listed in Firefox, but don't see the plugin listed. I had a bit of a hard time installing the plugin. Running the archive script returned only
"Verifying archive integrity... 100% All good.
Uncompressing Jazz-Plugin 100% "

Eventually I set the script to extract to a specific folder and ran install.sh in that folder, and was then able to verify that the files had been copied to the right folders (e.g. /usr/lib/mozilla/plugins/). But the fact that I still don't see the plugin in Firefox makes me wonder if it installed correctly.

Do you have any advice?

[jazz-soft]

Thanks for asking!
Here is what the install script does:

sudo cp ./64/jazz-chrome /usr/lib/mozilla/plugins/
sudo chmod 755 /usr/lib/mozilla/plugins/jazz-chrome
sudo cp ./firefox/com.jazz_soft.jazz_midi.json /usr/lib/mozilla/native-messaging-hosts/
sudo chmod 644 /usr/lib/mozilla/native-messaging-hosts/com.jazz_soft.jazz_midi.json

please make sure the paths are correct in com.jazz_soft.jazz_midi.json

Jazz-Plugin.so is not used in modern browsers and I should remove it from the installer.

[ttshaw1]

please make sure the paths are correct in com.jazz_soft.jazz_midi.json

com.jazz_soft.jazz_midi.json was copied to the expected location, and the "path" specified in "path": "/usr/lib/mozilla/plugins/jazz-chrome" is pointing to jazz-chrome as expected. Is that what you mean?