PulseAudio sound does not work in Electron apps

[alyaeanyx]

Describe the bug

Sound does not seem to work in Electron apps (for instance Element and FreeTube) with PulseAudio. The rest of the application works fine, but when they should normally play sound, the application stays mute and also doesn't show up in pavucontrol.

Steps To Reproduce

Steps to reproduce the behavior:

1. Install a NixOS system with FreeTube and sound.enable = true and hardware.pulseaudio.enable = true;
2. Open FreeTube and try to play a video with sound

Expected behavior

There should be sound

Logs

This is the stdout of FreeTube when I try to play a video with sound:

ALSA lib pcm.c:2576:(snd_pcm_open_conf) Unknown field libs
[1137736:0207/144459.635623:ERROR:alsa_util.cc(204)] PcmOpen: default,Invalid argument
ALSA lib pcm.c:2576:(snd_pcm_open_conf) Unknown field libs
[1137736:0207/144459.635699:ERROR:alsa_util.cc(204)] PcmOpen: plug:default,Invalid argument

Additional context

The problem occurs on nixos-unstable. I've tried to git bisect the bug, but I got stuck because nixos-rebuild had to build too many packages from scratch. So far, I've narrowed it down to bb141a8 (last known good commit) to a458189 (first known bad commit).

Notify maintainers

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

alexandra@thermidor ~> nix-shell -p nix-info --run "nix-info -m"
 - system: `"x86_64-linux"`
 - host os: `Linux 5.16.4, NixOS, 22.05 (Quokka)`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.6.0`
 - channels(root): `"nixos"`
 - channels(alexandra): `""`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`

[MarekPasnikowski]

I can confirm this. I also lost sound in LBRY 2 or 3 days ago.

Also, I am using Pipewire with Pulse compatibility.

[ppom0]

On nixos unstable, I'm getting the same issue just running amixer, which is an ALSA tool:

$ amixer
ALSA lib control.c:1464:(snd_ctl_open_conf) Unknown field libs
amixer: Mixer attach default error: Invalid argument

ping @fps @L-as @AndersonTorres as you maintain some ALSA parts

[L-as]

This should already be fixed, but I think it's in staging. Can't remember PR number.

[L-as]

#157631 I think you can just close this.

[alyaeanyx]

Yep, thanks!

[MarekPasnikowski]

Did sound return to your applications, @alyaeanyx ?

LBRY still does not output sound on master branch.

[L-as]

That's because it's in staging.