No effects loaded [linux]

[dario-davi]

Hi, when I execute soundshed on ubuntu 22.04, I get the followind console output:

[23949:0401/180502.747099:ERROR:gpu_memory_buffer_support_x11.cc(44)] dri3 extension not supported. [Electron MAIN]: Found 1 matching bluetooth devices out of 1, send to UI for selection. [Electron MAIN]: Auto selected device F7:EB:ED:6A:15:55 Electron's autoUpdater does not support the 'linux' platform

In the AMP section I can switch channels, but nothing appears below except: No preset selected (or amp not connected). Connect and refresh to get current amp settings. You may need to select a preset button on the amp to start.null

Thanks,
Dario

[webprofusion-chrisc]

Hi Dario,

Thanks, does using https://app.soundshed.com work in Chrome or Edge (only chromium based browser support web bluetooth)?

I wouldn't worry about the autoupdater part, that's just the updaet mechanism squealing because you're on linux.

When the preset doesn't appear you can usually fix it by either restarting the amp and the app, or by restarting the app. It implies that the communication got garbled along the way but it should be recoverable if you refresh.

[dario-davi]

Hi,

I have done everything you say, but I have the same result, either with electron app and with web app.
On windows it works correctly.

Thanks

[webprofusion-chrisc]

Thanks, sorry I don't have a linux machine to test with, it needs compiled from source and breakpoints set to see what the results are after connection, if you are a developer you could try that yourself. The web app version is the easiest to debug (using the browser developer tools), electron is a little more involved.

[webprofusion-chrisc]

If there are any settings on linux which could affect the transmit/receive speed for bluetooth that would be interesting. The code has some built in delays to give the amp time to reply and maybe it needs to be longer.

[LegitGreenBoi]

I can confirm this 'No preset selected' issue also occurs on Arch Linux.

[dario-davi]

HI,

this is what I can see from chrome console:

Setting up WebMidi.
app.7364caa22fb2c0d1402a.js:2 App startup..
app.7364caa22fb2c0d1402a.js:2 Midi/input events changed but midi not yet available : Spark 40 USB MIDI IN
app.7364caa22fb2c0d1402a.js:2 WebMidi enabled.
content_script_bundle.js:1 Attempting initialization Sat Mar 22 2025 10:49:54 GMT+0100 (Ora standard dell’Europa centrale)
app.7364caa22fb2c0d1402a.js:2 Selecting input Spark 40 USB MIDI IN
app.7364caa22fb2c0d1402a.js:2 Midi/input events changed : Spark 40 USB MIDI IN
app.7364caa22fb2c0d1402a.js:2 Web Bluetooth is experimental on this platform. See https://github.com/WebBluetoothCG/web-bluetooth/blob/main/implementation-status.md
app.7364caa22fb2c0d1402a.js:2 Connecting device..
app.7364caa22fb2c0d1402a.js:2 [SparkDeviceManager]:
app.7364caa22fb2c0d1402a.js:2 Starting background receiver
app.7364caa22fb2c0d1402a.js:2 [SparkDeviceManager]:
app.7364caa22fb2c0d1402a.js:2 Getting device current channel selection
app.7364caa22fb2c0d1402a.js:2 [SparkDeviceManager]:
app.7364caa22fb2c0d1402a.js:2 [SEND RAW]: 01fe000053fe19000000000000000000f0013a1502100000f7
50app.7364caa22fb2c0d1402a.js:2 waiting for channel selection info
app.7364caa22fb2c0d1402a.js:2 Connected, refreshing preset..
app.7364caa22fb2c0d1402a.js:2 [SparkDeviceManager]:
app.7364caa22fb2c0d1402a.js:2 Getting preset
app.7364caa22fb2c0d1402a.js:2 request preset info 127
app.7364caa22fb2c0d1402a.js:2 [SparkDeviceManager]:
app.7364caa22fb2c0d1402a.js:2 [SEND RAW]: 01fe000053fe1b000000000000000000f0013a15020100007f00f7
app.7364caa22fb2c0d1402a.js:2 [SparkDeviceManager]:
app.7364caa22fb2c0d1402a.js:2 Getting preset
app.7364caa22fb2c0d1402a.js:2 request preset info 127
app.7364caa22fb2c0d1402a.js:2 [SparkDeviceManager]:
app.7364caa22fb2c0d1402a.js:2 [SEND RAW]: 01fe000053fe1b000000000000000000f0013a15020100007f00f7

every "SEND RAW" corresponds to me pressing "Refresh" button.

Can I do something else to debug web app?

[webprofusion-chrisc]

@dario-davi I think first you would have to determine if chrome on linux can send BLE or not. You can test basic comms with the amp using python: https://github.com/paulhamsh/Spark-Parser/tree/main/SparkClassNew (the spork code in this repo is a typescript port of some of that) from there it's more about the chrome implementation.

You can set breakpoints in VS code to see messages incoming/outgoing.

[dario-davi]

I think he can send BLE commands because I can change the four saved presets from Soundshed, but I can't see details of saved presets and I can't issue new tones taken from the cloud