Acer 5920G: HDMI Sound

[tifereth <jesodi@googlemail.com>]

hi,

i'm the owner of an "Acer 5920g" Laptop with the following specs:
- Nvidia 8600m GT
- HDMI Port
- afaik. Realtek Sound Chip

i've tried a lot to get the hdmi sound working, but still without 
success. As i can only find "requests for help" for this sound chip, 
perhaps you could help the lost acer 5920 owners and me.

things i've tried yet:
- updated kernel to vanilla 2.6.29.1 ( alsa 1.8a )
- updated alsa to 1.9 ( stable )
- updated alsa to "1.0.19.46.g516fa.506.gb750c" ( snapshot from 
14.04.2009 )
- added the followng line to /etc/modprobe.d/alsa-base: "options 
snd-hda-intel model=auto"

result of aplay -L && aplay -l ist still the same:

aplay -l
**** Liste von PLAYBACK Geräten ****
Karte 0: Intel [HDA Intel], Gerät 0: ALC1200 Analog [ALC1200 Analog]
 Untergeordnete Geräte: 1/1
 Untergeordnetes Gerät '0: subdevice #0
Karte 0: Intel [HDA Intel], Gerät 1: ALC1200 Digital [ALC1200 Digital]
 Untergeordnete Geräte: 1/1
 Untergeordnetes Gerät '0: subdevice #0

aplay -L
default:CARD=Intel
   HDA Intel, ALC1200 Analog
   Default Audio Device
front:CARD=Intel,DEV=0
   HDA Intel, ALC1200 Analog
   Front speakers
surround40:CARD=Intel,DEV=0
   HDA Intel, ALC1200 Analog
   4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
   HDA Intel, ALC1200 Analog
   4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
   HDA Intel, ALC1200 Analog
   5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
   HDA Intel, ALC1200 Analog
   5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
   HDA Intel, ALC1200 Analog
   7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Intel,DEV=0
   HDA Intel, ALC1200 Digital
   IEC958 (S/PDIF) Digital Audio Output
null
   Discard all samples (playback) or generate zero samples (capture)

alsa_info.sh output: 
http://www.alsa-project.org/db/?f=aa10ba4429b9cc24826d8ce1a79a0e898fd69dea

Hopefully you have anymore ideas i could try, if you need anymore 
hardware information please contact me

thanks in advance,
tifereth