This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Missing sounds in Firefox 49

  • 3 replies
  • 3 have this problem
  • 10 views
  • Last reply by HeyEph

more options

All sounds are missing in Firefox 49. HTML5/flash video, audio etc. I've disabled all plugins, cleared cookies and cache. Ubuntu 16.04. It's all OK in other browsers. What's might be a problem?

All sounds are missing in Firefox 49. HTML5/flash video, audio etc. I've disabled all plugins, cleared cookies and cache. Ubuntu 16.04. It's all OK in other browsers. What's might be a problem?

All Replies (3)

more options

I figured it out. Somehow, Firefox was sending sound on HDMI port (i plugged in a monitor cable earlier). When I put in a cable, sound was playing from monitor's speakers, but slowed down. I changes sound source in settings of OS and now it works just fine. I use elementary OS (Ubuntu-based).

more options

I am having the same problem. No notification sounds. I can play audio and video, but no notifications.

How do I change this in Win 7?