No sound on Benq Joybook S72 (Ubuntu 10.04)

[timi030]

Hello,
i have installed Ubuntu 10.04 on a Benq Joybook S72. After adding radeon-kms.conf everything works fine except the sound. I read a lot of websites but found no solution for my problem.
The audiosettings and the alsamixer a adjusted right but the is no sound neither from the spaeakers nor from a plugged in headphone.
I have attached some details:

lsb_release -d
Description: Ubuntu 10.04.1 LTS

uname -r
2.6.32-25-generic

cat /proc/asound/cards
0 [ICH6 ]: ICH4 - Intel ICH6
Intel ICH6 with AD1980 at irq 10
aplay -l
**** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: ICH6 [Intel ICH6], Gerät 0: Intel ICH [Intel ICH6]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0
Karte 0: ICH6 [Intel ICH6], Gerät 4: Intel ICH - IEC958 [Intel ICH6 - IEC958]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0

aplay /usr/share/sounds/alsa/Noise.wav
Wiedergabe: WAVE '/usr/share/sounds/alsa/Noise.wav' : Signed 16 bit Little Endian, Rate: 48000 Hz, mono

aplay /usr/share/sounds/alsa/Front_Center.wav
Wiedergabe: WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate: 48000 Hz, mono


lspci -nnk | grep -iA2 audio
00:1e.2 Multimedia audio controller [0401]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller [8086:266e] (rev 04)
Kernel driver in use: Intel ICH
Kernel modules: snd-intel8x0

lsmod | grep "snd"
snd_intel8x0 25588 2
snd_ac97_codec 100646 1 snd_intel8x0
ac97_bus 1002 1 snd_ac97_codec
snd_pcm_oss 35308 0
snd_mixer_oss 13746 1 snd_pcm_oss
snd_pcm 70694 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_seq_dummy 1338 0
snd_seq_oss 26722 0
snd_seq_midi 4557 0
snd_rawmidi 19056 1 snd_seq_midi
snd_seq_midi_event 6003 2 snd_seq_oss,snd_seq_midi
snd_seq 47263 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_mid i_event
snd_timer 19098 2 snd_pcm,snd_seq
snd_seq_device 5700 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi ,snd_seq
snd 54180 14 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_ oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_ti mer,snd_seq_device
soundcore 6620 1 snd
snd_page_alloc 7076 2 snd_intel8x0,snd_pcm

cat /proc/asound/cards
0 [ICH6 ]: ICH4 - Intel ICH6
Intel ICH6 with AD1980 at irq 10

head -n 3 /proc/asound/card0/codec#0
head: „/proc/asound/card0/codec#0“ kann nicht zum Lesen geöffnet werden: No such file or directory

head -n 3 /proc/asound/card0/codec97#0/ac97#0-0
0-0/0: Analog Devices AD1980

PCI Subsys Vendor: 0x17ff

head -n 3 /proc/asound/card0/codec97#0/ac97#0-0+regs
0:00 = 0090
0:02 = 1f1f
0:04 = 0000

aplay -l
**** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: ICH6 [Intel ICH6], Gerät 0: Intel ICH [Intel ICH6]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0
Karte 0: ICH6 [Intel ICH6], Gerät 4: Intel ICH - IEC958 [Intel ICH6 - IEC958]
Sub-Geräte: 1/1
Sub-Gerät #0: subdevice #0

aplay /usr/share/sounds/startup.wav
/usr/share/sounds/startup.wav: No such file or directory

asoundconf list
asoundconf: Befehl nicht gefunden

ps -C esd
PID TTY TIME CMD

ps -C arts
PID TTY TIME CMD

ps -C pulseaudio
PID TTY TIME CMD
1239 ? 00:00:00 pulseaudio
Could someone please help me. Thanks

[timi030]

Has nobody any ideas ? i would appreciate a response. Thank you.

[timi030]

A user from the german ubuntuusers forum posted the solution.
I just had to switch on the "Exchange Front/Surround" in the alsamixer and change the sound preferences to surround and now its working.