Audio not working on youtube

[Madan_Bhandari]

Hi Friends,

I am New to Ubuntu. Now I am facing many problems, most of my problems are solved by searching solutions on askubuntu.com. But I am still unable to fix a sound problem with youtube (HTML5 Player).
If this problem is already solved then please prove me link for the same and tell me step by step.

I am using Ubuntu 14.04 64 bit on my Dell Vostro 2520.

Thanks.

[sandyd]

Hi, can you open a terminal (Unity Dash -> Terminal) and post the output of

lspci

Thanks!

[Vladlenin5000]

Is it Youtube (HTML5) the only service/app where the sound isn't working?