On board soundcard but no sound

I have no sound - and this gets me crazy ! i unmute alsamixer and then save settings "alsactl store"; what could be the problem ? linux didn't recognize my board - no driver for it ? what can i do to get my sound ?

What is your soundcard and what is the output of lsmod???

that's the output:

snd-pcm-oss
snd-mixer
appletalk
parport_pc
lp
parport
uhci
usbcore
snd-via82xxx
snd-pcm
snd-time
snd-ac97-codec
snd-page-alloc
snd-mpu401-uart
snd-rawmidi
snd-seq-device
snd
umidi-snd-seq-device
soundcore
ide-scsi
agpgart

some questions:

-this means that only these modules are used by my workstation ? (and i don't need the other ones so i can delet them ? or i will need them later ? )
-in linux how can i find out what motherboard do i have ? (i know that my sndboard is a SOLTEK )
-i don't know how to find out what sound card do i have.

Best way to find out the motherboard is to open up the box IMO. If you type lspci -v in a console it should list all your pci hardware (including your integrated soundcard). The soundcard will be listed as a multimedia device (or something similar, not in linux atm & I cant remember exactly). if you want to post up the correct bit of lspci that should tell us if you have the correct soundcard driver module

At the moment you have linux thinking that your soundcard is a VIA82xxx (it has the module for a VIA82 soundcard loaded), no idea if this is correct though - once you know your motherboard a quick search on google should let you know if this is right or not.

don't delete all the other modules!!! if you have hotplug (which I assume you do) then the other ones get loaded automatically as you need them. If you want to get rid of ones you know you're never gonna use then I think the best way to do this is to compile your own kernel

Do you get any errors when you start up? If you can find out what make and model your motherboard is it would help.

Looks like i made a mistake: my motherboard is a SOLTEK not my sound card. My sound card is on this board.

NO, when linux boots no error message.

We need to know what model motherboard or just what kind of soundcard it has, type lspci -v and show us the relevant information. Should be something like Multimedia audio controller: ....