lspci -v says this
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
Subsystem: Hewlett-Packard Company Device 3073
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at 98900000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use:HDA Intel
Kernel modules: snd-hda-intel
i have no sound errors but also i can't hear anything.
OS - Ubuntu
Sorry for my broken English

what output do you get when you run?
/sbin/chkconfig --list sound
/sbin/chkconfig --list alsa

also what details have you for?
/etc/modprobe.conf

I had a similar problem and added this to the modprobe.conf file...
options snd-hda-intel index=0 probe_mask=3 position_fix=3 model=laptop

run this...
grep sound-slot /etc/modprobe.conf

to see what sound slot your machine is using as I also had to edit this...
alias sound-slot-0 snd_hda_intel
to this...
alias sound-slot-3 snd_hda_intel

and presto... sound! - you might also want to check your PCM sound level is not set to 0
alsamixer -c 0

hope this helps...

/sbin/chkconfig --list sound - gave me No such file or directory.And so for the other commands
Sorry my mistake, but i'm using BT4 not Ubuntu.