[dapper & edgy] Sound -> Chipset ADI1981B

Hi

I had a lot of problems with this chipset. (ADI1981B)

On both (dapper+edgy) I have a strange problem : when the system is installed, all seems to go ok ; even if I _reboot_ the computer, sound goes ok. But if I _shutdown_ and then _restart_ my laptop the sound looks very ugly : I have only a infernal whistle.

It's very strange that shutdown completely the system does it...

So I fix the problem adding : "options snd-hda-intel index=0 single_cmd=1 model=laptop-eapd" at the end of the file /etc/modprobe.d/alsa-base

It works on dapper and edgy.

But when I installed Edgy, I had another problem : when I change the volume with anything (keyboard shortcuts, software, ...) the sound is cut ! I can't take it back even if I put the volume on his init value.

To fix this problem I use my old alsa-base (taken on dapper) and it works well.

So, this was my old alsa-base (dapper) I actually use (You can see the first fix at the end of the file) :

-------------------------------------------
# autoloader aliases
install sound-slot-0 modprobe snd-card-0
install sound-slot-1 modprobe snd-card-1
install sound-slot-2 modprobe snd-card-2
install sound-slot-3 modprobe snd-card-3
install sound-slot-4 modprobe snd-card-4
install sound-slot-5 modprobe snd-card-5
install sound-slot-6 modprobe snd-card-6
install sound-slot-7 modprobe snd-card-7

# Cause optional modules to be loaded above generic modules
install snd modprobe --ignore-install snd $CMDLINE_OPTS && { modprobe -Qb snd-ioctl32 ; : ; }
install snd-pcm modprobe --ignore-install snd-pcm $CMDLINE_OPTS && { modprobe -Qb snd-pcm-oss ; : ; }
install snd-mixer modprobe --ignore-install snd-mixer $CMDLINE_OPTS && { modprobe -Qb snd-mixer-oss ; : ; }
install snd-seq modprobe --ignore-install snd-seq $CMDLINE_OPTS && { modprobe -Qba snd-seq-midi snd-seq-oss ; : ; }

# Cause optional modules to be loaded above sound card driver modules
install snd-emu10k1 modprobe --ignore-install snd-emu10k1 $CMDLINE_OPTS && { modprobe -Qb snd-emu10k1-synth ; }
install snd-via82xx modprobe --ignore-install snd-via82xx $CMDLINE_OPTS && { modprobe -Qb snd-seq ; }

# Load saa7134-alsa instead of saa7134 (which gets dragged in by it anyway)
install saa7134 modprobe --ignore-install saa7134 $CMDLINE_OPTS && { modprobe -Qb saa7134-alsa ; : ; }
# Prevent abnormal drivers from grabbing index 0
options snd-bt87x index=-2
options snd-atiixp-modem index=-2
options snd-intel8x0m index=-2
options snd-via82xx-modem index=-2
#options snd-hda-intel position_fix=1 model=3stack
options snd-hda-intel index=0 single_cmd=1 model=laptop-eapd
-------------------------------------------

And this was on Edgy (without patch) :
-------------------------------------------
# autoloader aliases
install sound-slot-0 /sbin/modprobe snd-card-0
install sound-slot-1 /sbin/modprobe snd-card-1
install sound-slot-2 /sbin/modprobe snd-card-2
install sound-slot-3 /sbin/modprobe snd-card-3
install sound-slot-4 /sbin/modprobe snd-card-4
install sound-slot-5 /sbin/modprobe snd-card-5
install sound-slot-6 /sbin/modprobe snd-card-6
install sound-slot-7 /sbin/modprobe snd-card-7

# Cause optional modules to be loaded above generic modules
install snd /sbin/modprobe --ignore-install snd $CMDLINE_OPTS && { /sbin/modprobe -Qb snd-ioctl32 ; : ; }
install snd-pcm /sbin/modprobe --ignore-install snd-pcm $CMDLINE_OPTS && { /sbin/modprobe -Qb snd-pcm-oss ; : ; }
install snd-mixer /sbin/modprobe --ignore-install snd-mixer $CMDLINE_OPTS && { /sbin/modprobe --Qb snd-mixer-oss ; : ; }
install snd-seq /sbin/modprobe --ignore-install snd-seq $CMDLINE_OPTS && { /sbin/modprobe -Qb snd-seq-midi ; /sbin/modprobe --quiet snd-seq-oss ; : ; }

# Cause optional modules to be loaded above sound card driver modules
install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 $CMDLINE_OPTS && { /sbin/modprobe -Qb snd-emu10k1-synth ; }
install snd-via82xx /sbin/modprobe --ignore-install snd-via82xx $CMDLINE_OPTS && { /sbin/modprobe -Qb snd-seq ; }

# Load saa7134-alsa instead of saa7134 (which gets dragged in by it anyway)
install saa7134 /sbin/modprobe --ignore-install saa7134 $CMDLINE_OPTS && { /sbin/modprobe -Qb saa7134-alsa ; : ; }
# Prevent abnormal drivers from grabbing index 0
options snd-bt87x index=-2
options snd-atiixp-modem index=-2
options snd-intel8x0m index=-2
options snd-via82xx-modem index=-2
options snd-usb-audio index=-2
options snd-usb-usx2y index=-2
-------------------------------------------

So finally it works with the patched alsa-base of dapper. But I really don't understand why a simple reboot doesn't do anything and a shutdown+restart kill the driver :s

It's one of the most incomprehensible bug I ever seen... have you got an explication ?