da bravo maialino è la prima cosa che ho fatto
/etc/modprobe.d/blacklist
blacklist via8237
blacklist via 82xx
poi anche
/etc/modprobe..d/alsa-base-blacklist
# Uncomment these entries in order to blacklist unwanted modem drivers
# blacklist snd-atiixp-modem
blacklist snd-intel8x0m
blacklist snd-via82xx-modem
/etc/modprobe..d/sound
alias snd-card-0 snd-emu10k1
options snd-emu10k1 index=0
ma al riavvio vedo sempre la maledetta via8237
che poi l'audio sarebbe una AC97
che ho verificato dal bios è disbilitata
penso che domani porto a casa uno stagnatore
e tiro via il chip ..........

solo con alsaconf l'audio riparte
ho trovato qualcosa qui
http://www.debianhelp.org/node/10560ma non capisco il comando
So then I ran
# rmmod (all module names which alsaconf had unloaded)
And the result was a list of modules that were not loaded AFTER alsaconf had finished the configuration of my emu10k1 card.
I put the names of these not-loaded modules into /etc/modprobe.d/blacklist.
So in total I have now these extra lines in etc/modprobe.d/blacklist:
# Try to get emu10k1 listed in /proc/asound/cards:
blacklist bt878
blacklist bttv
blacklist snd_bt87x
blacklist snd_emu10k1x
blacklist snd_mpu401
blacklist snd_mpu401_uart
blacklist snd_intel8x0
And now I can hear sound, even after a re-boot

costui pare aver risolto