No sound in Firefox? Help!

Discussion in 'macOS High Sierra (10.13)' started by 0092284, Jun 30, 2017.

  1. 0092284, Jun 30, 2017
    Last edited: Jun 30, 2017

    0092284 Suspended

    Oct 8, 2013
    So, updated to High Sierra Public Beta today, and everything works like a charm - Except Firefox.

    No sound at all.

    Plugins updated. Music from itunes and all other apps work fine.

    Tried downloading a different version of Firefox and same result. A video from youtube plays, but not the sound.

    Rebooted machine several times. Reset NRAM (or was it VRAM?) by holding option+cmd+r+p. Same result.

    Anyone had a similar issue? Suggestions?

    EDIT: Safari works fine. Seems Firefox has an issue with High Sierra.
  2. Spazturtle macrumors newbie

    Sep 17, 2013
    Having the same issue, telling Firefox to use ffmpeg doesn't fix it either.
  3. neeklamy macrumors newbie

    Jul 6, 2012
    There’s a bug logged for this on the Bugzilla, Bug 1376163 - [10.13] No audio playback on YouTube, no audio/video on Netflix (macOS High Sierra 10.13 Beta)

    And there’s a fix.

    And for anyone who doesn’t know how to get to the about:config, just type about:config into the address bar. Much more detail from the Configuration Editor for Firefox article.

    Depending on what version of Firefox you’re using and if you’re opted out of e10s (Mozilla’s cute short name for Electrolysis, their sandboxed browser engine tech), you may not have to re-enable e10s. This is what you might see in Firefox ▸ Preferences:


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