1636781 - Firefox 76.0 breaks videoconferencing (no audio-video tx/rx)

Status: RESOLVED DUPLICATE of bug 1636632

(Core :: WebRTC: Audio/Video, defect)

Description

[CeDeROM]

User Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:76.0) Gecko/20100101 Firefox/76.0

Steps to reproduce:

1. Update from 75.0 to 76.0.

Actual results:

1. In Firefox 75.0 videoconferencing worked fine.
2. In Firefox 76.0 videoconferencing does not work anymore.

Expected results:

The videoconferencing should work fine as in 75. In 76 noone can see my audio-video, I cannot see anyone's audio-video. I can see my camera and microphone preview and it works fine. But the streams does not to tranmit/receive.

Comment 1

[CeDeROM]

Tested on Google Hangouts, Google Meet, JITSI Meet.

Comment 2

[CeDeROM]

I am using FreeBSD 12.1-RELEASE AMD64. This also seems to happen on macOS as the other party also did not receive/transmit audio-video.

# uname -a
FreeBSD 0xCFMX4 12.1-RELEASE-p3 FreeBSD 12.1-RELEASE-p3 GENERIC  amd64

firefox-76.0_3,1                                                                                                                                                 [53/1937]
Name           : firefox
Version        : 76.0_3,1
Installed on   : Sun May 10 20:07:18 2020 CEST
Origin         : www/firefox
Architecture   : FreeBSD:12:amd64
Prefix         : /usr/local
Categories     : www
Licenses       :
Maintainer     : [e-mail]
WWW            : http://www.mozilla.com/firefox
Comment        : Web browser based on the browser portion of Mozilla
Options        :
        ALSA           : on
        CANBERRA       : off
        DBUS           : on
        DEBUG          : off
        FFMPEG         : on
        GCONF          : on
        JACK           : on
        LIBPROXY       : off
        OPTIMIZED_CFLAGS: on
        PROFILE        : on
        PULSEAUDIO     : on
        SNDIO          : on
        TEST           : off
Shared Libs required:
        libdbus-glib-1.so.2
        libgtk-x11-2.0.so.0
        libXext.so.6
        libpango-1.0.so.0
        libfreetype.so.6
        libpixman-1.so.0
        libcairo.so.2
        libgtk-3.so.0
        libffi.so.6
        libxcb-shm.so.0
        libX11-xcb.so.1
        libXt.so.6
        libwebp.so.7
        libcairo-gobject.so.2
        libatk-1.0.so.0
        libevent-2.1.so.7
        libplc4.so
        libvpx.so.6
        libXcomposite.so.1
        libgdk_pixbuf-2.0.so.0
        libxcb.so.1
        libgio-2.0.so.0
        libssl3.so
        libXfixes.so.3
        libwebpdemux.so.2
        libnss3.so
        libnssutil3.so
        libnspr4.so
        libgobject-2.0.so.0
        libglib-2.0.so.0
        libXrender.so.1
        libharfbuzz.so.0
        libicuuc.so.67
        libdbus-1.so.3
        libXdamage.so.1
        libdav1d.so.4
        libgraphite2.so.3
        libgdk-x11-2.0.so.0
        libpng16.so.16
        libaom.so.0
        libX11.so.6
        libfontconfig.so.1
        libicui18n.so.67
        libsmime3.so
        libgdk-3.so.0
Annotations    :
        FreeBSD_version: 1201000
        cpe            : cpe:2.3:a:mozilla:firefox:76.0:::::freebsd12:x64:3
        deprecated     : Uses Python 2.7 which is EOLed upstream
        expiration_date: 2020-12-31
        no_provide_shlib: yes
        repo_type      : binary
        repository     : FreeBSD
Flat size      : 215MiB

Comment 3

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

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

Comment 4

[CeDeROM]

Here is a FreeBSD bug report that may give some more details: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246363

Comment 5

[Firefox Bug Husbandry Bot]

Because this bug's Severity is normal and has not been changed, and this bug's priority is -- (none,) indicating it has has not been previously triaged, the bug's Severity is being updated to -- (default, untriaged.)

Comment 6

[CeDeROM]

The bug has been identified and fixed for FreeBSD by Jan Beich. Looks like WebRTC and --with-system-nss issue. MANY THANKS JAN! :-)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246363

Comment 7

[Jan Beich]

Thanks for confirming. I've actually discovered bug 1624128 after looking at bug 1636632.