hello again!
it seem's that my problem is solved.
gnubien from #alsa on freenode.org, told me that i should try to disable
"PCI Dealy Transaction".
until this moment i couldn't recogince any mistakes on the sound device.
here i quote myself from the alsa wiki:
"User comments
Z421 wrote on 2007
hello!
i've a soundcard with ice1712 chipset, but some time ago it started to
make troubles, but i couldn't figure out, why this problem appears.
when i boot my system, and play around with the sound, everything is okey.
but when my system is running some time, i get crackling sound out from
th