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Why does sound sometimes not work after a restart? (version 38)

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Watching BBC iplayer or any other video service, when browser is restarted due to crash or manually, the sound often fails to restart. Video will work but sound will not until a further restart is performed.

Shockwave flash 17.0.0.169

Watching BBC iplayer or any other video service, when browser is restarted due to crash or manually, the sound often fails to restart. Video will work but sound will not until a further restart is performed. Shockwave flash 17.0.0.169

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All was fine until I upgraded to version 38

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Hello beededea, try Firefox Safe Mode to see if the problem goes away. Firefox Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes).

If Firefox is open, you can restart in Firefox Safe Mode from the Help menu:

  • Click the menu button New Fx Menu, click Help Help-29 and select Restart with Add-ons Disabled.

When the Firefox Safe Mode window appears, select "Start in Safe Mode".

SafeMode-Fx35

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.

To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.


Also maybe it is not related but you have a user.js file in your profile folder. The user.js file does not exist by default. If you create the file, forget it, if you have not create the file then delete the User.js file, to see if the problem goes away (some programs create and write in the file also).

thank you