1647672 - No sound in Firefox Developer Edition with macOS 11 Big Sur

Status: RESOLVED DUPLICATE of bug 1647816

(Core :: Widget: Cocoa, defect, P2)

Description

[Vlad]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:78.0) Gecko/20100101 Firefox/78.0

Steps to reproduce:

• Installed macOS 11
• Opened Firefox
• Opened Youtube (or any other site with audio)

Actual results:

No sound

Expected results:

Sound

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 2

[Alan Williams [:aw1231]]

Same here on nightly, with similar problems with videos on twitter and vimeo. Not sure if it is related, but some videos actually crash the tab. I didn't collect the crash info but if it happens again, I'll pass it along.

Comment 3

[Vlad]

(In reply to Alan Williams [:aw1231] from comment #2)

Same here on nightly, with similar problems with videos on twitter and vimeo. Not sure if it is related, but some videos actually crash the tab. I didn't collect the crash info but if it happens again, I'll pass it along.

Actually, all videos with sound are crashing now, somehow Youtube just works without audio

Comment 4

[watch998]

Same problem

Comment 5

[maxwell.leiter]

This is a duplicate/same problem as https://bugzilla.mozilla.org/show_bug.cgi?id=1647816