No audio in Vivaldi on NixOS

Hello,

I’m fairly new to Nix & NixOS. I’m running NixOS 21.05 with recently updated packages (this week).

I’m getting no audio output from vivaldi (a chromium-based web browser).

YouTube videos play successfully, and the tab shows the speaker icon indicating that it’s making sound
2021-08-25-143025_55x58_scrot

but pavucontrol shows no playback

Firefox works fine out of the box.

I have seen several issues / discussions mentioning WideVine and proprietary codecs:

However, I have enabled both of these options, and still have no audio playback in Vivaldi:

vivaldi.override {
  proprietaryCodecs = true;
  enableWidevine = true;
}

If anyone has any idea what the issue is or how to further debug, I would be very grateful.

Thanks!
Oliver

1 Like

Possibly related, I’m seeing the same symptoms with LosslessCut, an Electron app. The browser will play videos but I hear no sound and it isn’t listed in PulseAudio Volume Control.