Je n'ai pas de son, sous debian. Voila, le resultat des tests.

vartan@dau94-5-82-66-33-236:~$ whoami
vartan
vartan@dau94-5-82-66-33-236:~$ ls -l /dev/dsp*
crw-rw---- 1 root audio 14, 3 oct 19 16:23 /dev/dsp
audio:29:vartan
vartan@dau94-5-82-66-33-236:~$

dau94-5-82-66-33-236:~# dpkg -l | grep alsa
ii alsa-base 1.0.16-1.1 ALSA driver configuration files
ii alsa-oss 1.0.15-1 ALSA wrapper for OSS applications
ii alsa-source 1.0.16-1.1 ALSA driver sources
ii alsa-utils 1.0.16-1 ALSA utilities
ii alsamixergui 0.9.0rc2-1-9 graphical soundcard mixer for ALSA soundcard driver
ii alsaplayer-alsa 0.99.80-1 PCM player designed for ALSA (ALSA output module)
ii alsaplayer-common 0.99.80-1 PCM player designed for ALSA (common files)
ii alsaplayer-gtk 0.99.80-1 PCM player designed for ALSA (GTK version)
ii alsaplayer-jack 0.99.80-1 PCM player designed for ALSA (JACK output module)
ii alsaplayer-oss 0.99.80-1 PCM player designed for ALSA (OSS output module)
ii gstreamer0.10-alsa 0.10.19-1 GStreamer plugin for ALSA
ii libesd-alsa0 0.2.36-3 Enlightened Sound Daemon (ALSA) - Shared libraries
ii libsdl1.2debian-alsa 1.2.13-2 Simple DirectMedia Layer (with X11 and ALSA options)
ii vlc-plugin-alsa 0.8.6.c-6+lenny3 dummy transitional package

dau94-5-82-66-33-236:/# cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 76
model name : Mobile AMD Sempron(tm) Processor 3500+
stepping : 2
cpu MHz : 1800.052
cache size : 512 KB
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow up rep_good pni cx16 lahf_lm extapic cr8_legacy
bogomips : 3603.84
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc

dau94-5-82-66-33-236:/#

dau94-5-82-66-33-236:/# lsmod
Module Size Used by
snd_hda_intel 362024 0
snd_pcm_oss 46624 0
snd_mixer_oss 21376 1 snd_pcm_oss
snd_pcm 89352 2 snd_hda_intel,snd_pcm_oss
snd_timer 28552 1 snd_pcm
snd 65896 5 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore 13216 1 snd
snd_page_alloc 15248 2 snd_hda_intel,snd_pcm
ipv6 286248 19
nls_iso8859_1 9728 1
nls_cp437 11392 1
vfat 17920 1
fat 58288 1 vfat
loop 22788 0
joydev 17536 0
video 25620 0
output 8704 1 video
psmouse 45724 0
battery 19976 0
ac 11400 0
button 13984 0
i2c_viapro 13592 0
shpchp 38428 0
pci_hotplug 35504 1 shpchp
serio_raw 11908 0
evdev 17024 7
k8temp 10496 0
i2c_core 29824 1 i2c_viapro
pcspkr 7808 0
ext3 139024 1
jbd 55976 1 ext3
mbcache 13952 1 ext3
ide_cd 44704 0
cdrom 39464 1 ide_cd
sd_mod 33536 4
via82cxxx 13060 0 [permanent]
generic 9732 0 [permanent]
ide_core 144920 3 ide_cd,via82cxxx,generic
via_rhine 30088 0
mii 10240 1 via_rhine
ata_generic 13060 0
sata_via 17540 3
ehci_hcd 39692 0
uhci_hcd 30112 0
libata 162736 2 ata_generic,sata_via
scsi_mod 170296 2 sd_mod,libata
thermal 22688 0
processor 45032 2 thermal
fan 9864 0

...c'est grave docteur?