notebook to hd tv hdmi audio problem

[aleroc]

Hi, I have an HP Pavilion dv6-3102sl notebook with Windows 7 64 bit home edition.
if i connect my laptop to my hd tv via hdmi i have no sound... but the laptop's speakers sounds. IDT High defnition works.
In this case if i change output to Ati High definition Audio I can't play mp3 files, and it takes no control of applications sound.
Particularly the ATi high definition volume control never moves.
But if i connect my playstation 3 to the same television i can listen to it.
And if i connect my hp laptop to another hd tv i can listen to this too!
Why does my ATI High Definition Audio create this problem?

I'm an italian user, sorry for my bad english.

 

[Tech Wizard]

I had the same problem as you and I just restarted the computer then the sound was fixed. hope this helped.