Sound problem
 

I have sound with HDMI in VLC but I have nosound in system and firefox with HDMI . How ta fix this ?

what is "sound in system"? are you expecting login sounds and all sorts of bleeps? maybe there are none.
and firefox? firefox does not emit sound by itself, so you have to specify. i'm guessing flash video?
and why do you stress HDMI? does it mean you do have sound on analog outputs?

Thanks for answer and question .
Can you see in Tread : Please share your building experiences

chandrakant try to help me there

there's no need to thank me for my questions, instead you should answer them!

i have very little building experience, and none at all with building sound drivers.

who is chandrakant?