GUI controls stop working after a few seconds

[davigega]

Hello! I'm having some issues working with the IDE: No matter what I program, the GUI elements stop working after a few seconds. I am talking about very simple programs such as:

import("stdfaust.lib");

volume = vslider("Volume", 0, 0, 1, 0.01): si.smoo;
sig = os.osci(300);

process = sig*volume;

The DSP runs as expected, and it doesn't stop. After a few seconds I just cannot interact with the slider any more. In this example the amplitude value would hang to "the last registered position" of the slider. No matter which DSP engine I am using (SignalProcessor or AudioWorklet) and which browser I am using (Firefox, Chrome, Chromium)

I am experiencing the same problem with a local installation, which makes me guess that the problem might be related to the browser, but I wouldn't know how to further debug the Issue all by myself.

I am working on a machine running Debian GNU/Linux bookworm/sid Firefox 91.4.0esr (64-bit) Chrome Version 96.0.4664.110 (Official Build) (64-bit)

Congratulation for your amazing work! Faust is a real revolution

[sletz]

Do you see any error message in the JS console?

[davigega]

Just a warning:

WARNING : cannot generate helper JS file, outpath is incorrect : "/dev/null"

and sometimes from Firefox :

asm.js type error: Disabled because no suitable wasm compiler is available

[sletz]

Working here on macOS, no nothing I can do more on my side. You can possibly use the Faust Slack channel or Discord "The Audio Programmer" to get more help from Debian users ?

[davigega]

Since I am not experiencing this problem when browsers run in Safe Mode I realised that the only browser extension that I have installed in both Firefox and Chrome is ExpressVPN. If I disabled it everything works as expected. It seems that this extension runs a loop in the background, when "Not Connected", which interferes with some changeValue function of the UIElements. I have no solution but maybe is safe enough to highlight this Issue in the README (as suggested by @sletz )

[sletz]

PR merged thanks.