User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:107.0) Gecko/20100101 Firefox/107.0

Steps to reproduce:

When I just open Firefox, either normal or in private, or even in troubleshooting mode, the audio stream is immediately opened even though there is not website opened.

Actual results:

as soon as I open Firefox it open an audio out stream and keeps that open until I close all instances of Firefox. This keeps my laptop from sleeping. I'm on Windows 10 (pro) using the latest release version of Firefox. I have also started Firefox in troubleshooting mode (to disable all add-ons) but again it opens an audio stream. I don't even need to browse to any website. This bug was not always happening, I don't know when exactly it started. I have also tested creating a new profile in Firefox and opening an instance on that profile (closing all others) but again an audio steam was opened.

Expected results:

When I open Firefox, no audio stream should be opened until a website I am on starts playing audio.

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: cubeb' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Note this means my laptop will run out of battery just because and instance of Firefox is open. People who use Veracrypt will see their laptop never goes into hibernation aka remains in an unlocked state as long as they have any instance of Firefox open.

Hey nielsl@xs4all.nl, what indicates to you that an 'audio stream' is open?

Hmm, so I found that an audio control does show up way down in the app level mixer of Windows 11 for Firefox. However this doesn't prevent my device from sleeping. We also haven't had other reports of sleep issues. Can you post your about:support text? This might be something vendor specific.

When the issue happens, could you run powercfg -requests which allows us to know what thing keeps your computer awake. Thanks!

(In reply to Alastor Wu [:alwu] from comment #5)

When the issue happens, could you run powercfg -requests which allows us to know what thing keeps your computer awake. Thanks!

You'll need to open an administrative console to invoke this as well.