What's happen? Suddenly No Sound + Youtube's Videos are played Too Fast in 13.04 [duplicate]

What has happened? Suddenly the PC have no sound and YouTube's videos are played too fast. Is there a Flash problem?

Ubuntu Version : 13.04 [Desktop]

Solution 1:

Running pulseaudio -k then pulseaudio -d should restart pulseaudio and temporarily fix your issue. For a more complete fix that doesn't stop working, I had to download the latest flash and install manually. This should work for you on firefox - other browsers may need the libflashplayer.so placed elsewhere. Google should help if that is the case.

(directions taken from here)

Open http://get.adobe.com/flashplayer/otherversions/

Choose Linux 32-bit on Step 1

Choose Flash Player 11.2 (tar.gz) on Step 2, download the file

Once download is complete, right click on the file (tar.gz) and click on Extract here

Launch Terminal (Keyboard Shortcut : Ctrl+Alt+T)

Go to that location where you extracted the file

Run this command : sudo mv libflashplayer.so /usr/lib/firefox-addons/plugins

Launch Mozilla Firefox and check do you have Adobe Flash Player

Solution 2:

I had the same issue, yesterday I connected my laptop to the TV and I had to select HDMI Audio output in the Sound Settings menu for having the sound working on TV. This morning I had the HDMI disconnected and the only thing that I had to do for fixing the issue is double clicking in the default audio interface.

Solution 3:

I fixed a similar issue just by going into the sound settings & picking the correct audio output device (something like 'inbuilt analog audio' iirc).

I think the problem started when a user fiddled with the volume controls & ended up at the sound menu, then inadvertently clicked on a device option. You can go to sound icon hit mixer and fix from there.