allora per quanto riguarda il bios , non trovo proprio niente riguardo l'audio, l'unica periferica che si puo' disabilitare è la porta infrarossi. non c'è neanche una sezione advanced o roba simile...
ho notato una cosa pero' che penso possa esservi di aiuto per capire meglio il problema:
quando da grub seleziono ubuntu (ho un dual boot) e appena prima che parta la schermata del kms di loading ubuntu, ho notato che per una frazione di secondo appare una scritta che per quanto mi sforzi non riesco a leggere del tutto , quello che sono riuscito a leggere è qualcosa del tipo " acer-wmi .....no grup...... unsupported interface ...."
ora vi posto i comandi da terminale:
massimiliano@max-laptop:~$ cat /etc/modprobe.d/alsa-base.conf
# 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 --quiet --use-blacklist snd-ioctl32 ; /sbin/modprobe --quiet --use-blacklist snd-seq ; }
#
# Workaround at bug #499695 (reverted in Ubuntu see LP #319505)
install snd-pcm /sbin/modprobe --ignore-install snd-pcm $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-pcm-oss ; : ; }
install snd-mixer /sbin/modprobe --ignore-install snd-mixer $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-mixer-oss ; : ; }
install snd-seq /sbin/modprobe --ignore-install snd-seq $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq-midi ; /sbin/modprobe --quiet --use-blacklist snd-seq-oss ; : ; }
#
install snd-rawmidi /sbin/modprobe --ignore-install snd-rawmidi $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq-midi ; : ; }
# Cause optional modules to be loaded above sound card driver modules
install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-emu10k1-synth ; }
install snd-via82xx /sbin/modprobe --ignore-install snd-via82xx $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq ; }
# Load saa7134-alsa instead of saa7134 (which gets dragged in by it anyway)
install saa7134 /sbin/modprobe --ignore-install saa7134 $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist saa7134-alsa ; : ; }
# Prevent abnormal drivers from grabbing index 0
options bt87x index=-2
options cx88_alsa index=-2
options saa7134-alsa index=-2
options snd-atiixp-modem index=-2
options snd-intel8x0m index=-2
options snd-via82xx-modem index=-2
options snd-usb-audio index=-2
options snd-usb-us122l index=-2
options snd-usb-usx2y index=-2
options snd-usb-caiaq index=-2
# Ubuntu #62691, enable MPU for snd-cmipci
options snd-cmipci mpu_port=0x330 fm_port=0x388
# Keep snd-pcsp from being loaded as first soundcard
options snd-pcsp index=-2
options snd-hda-intel model=acer
massimiliano@max-laptop:~$ cat /etc/modprobe.d/sound
alias snd-card-0 snd-intel8x0
alias sound-slot-0 snd-intel8x0
massimiliano@max-laptop:~$ cat /proc/asound/card0/codec*|grep Codec
cat: /proc/asound/card0/codec97#0: È una directory
massimiliano@max-laptop:~$ pactl stat
Attualmente in uso: 1 blocchi contenenti 64,0 KiB byte in totale.
Allocati durante l'intera esecuzione: 67 blocchi contenenti 2,0 MiB byte in totale.
Dimensione della cache dei campioni: 0 B
Nome utente: massimiliano
Nome host: max-laptop
Nome server: pulseaudio
Versione server: 0.9.21-63-gd3efa-dirty
Specifica campionamento predefinita: s16le ch 2 44100 Hz
Mappa canale predefinita: front-left,front-right
Sink predefinito: alsa_output.pci-0000_00_1e.2.analog-stereo
Sorgente predefinita: alsa_input.pci-0000_00_1e.2.analog-stereo
Cookie: 35548f28
massimiliano@max-laptop:~$ cat /dev/sndstat
Sound Driver:3.8.1a-980706 (ALSA v1.0.21 emulation code)
Kernel: Linux max-laptop 2.6.32-23-generic-pae #37-Ubuntu SMP Fri Jun 11 09:26:55 UTC 2010 i686
Config options: 0
Installed drivers:
Type 10: ALSA emulation
Card config:
Intel ICH6 with Cx20468-31 at irq 17
Audio devices:
0: Intel ICH6 (DUPLEX)
Synth devices: NOT ENABLED IN CONFIG
Midi devices: NOT ENABLED IN CONFIG
Timers:
31: system timer
Mixers:
0: Conexant Cx20468-31
massimiliano@max-laptop:~$ cat /proc/interrupts
CPU0
0: 139250 IO-APIC-edge timer
1: 1664 IO-APIC-edge i8042
8: 1 IO-APIC-edge rtc0
9: 529 IO-APIC-fasteoi acpi
12: 730 IO-APIC-edge i8042
14: 15666 IO-APIC-edge ata_piix
15: 0 IO-APIC-edge ata_piix
16: 8330 IO-APIC-fasteoi uhci_hcd:usb5, radeon, eth0
17: 8608 IO-APIC-fasteoi ipw2200, Intel ICH6
18: 4 IO-APIC-fasteoi uhci_hcd:usb4, ohci1394, tifm_7xx1, yenta
19: 11689 IO-APIC-fasteoi uhci_hcd:usb3
23: 2 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2
NMI: 0 Non-maskable interrupts
LOC: 29165 Local timer interrupts
SPU: 0 Spurious interrupts
PMI: 0 Performance monitoring interrupts
PND: 0 Performance pending work
RES: 0 Rescheduling interrupts
CAL: 0 Function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
THR: 0 Threshold APIC interrupts
MCE: 0 Machine check exceptions
MCP: 2 Machine check polls
ERR: 0
MIS: 0
massimiliano@max-laptop:~$ 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 70886 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_seq_dummy 1338 0
snd_seq_oss 26726 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_midi_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 54148 14 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 6620 1 snd
snd_page_alloc 7172 2 snd_intel8x0,snd_pcm
http://pastebin.ca/1892887
massimiliano@max-laptop:~$ lsmod
Module Size Used by
michael_mic 1732 8
arc4 1153 4
lib80211_crypt_tkip 7596 2
fbcon 35102 71
tileblit 2031 1 fbcon
font 7557 1 fbcon
bitblit 4707 1 fbcon
softcursor 1189 1 bitblit
vga16fb 11385 0
vgastate 8961 1 vga16fb
joydev 8708 0
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 70886 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_seq_dummy 1338 0
snd_seq_oss 26726 0
snd_seq_midi 4557 0
snd_rawmidi 19056 1 snd_seq_midi
pcmcia 33152 0
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_midi_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
radeon 695210 3
ttm 50071 1 radeon
snd 54148 14 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
ipw2200 135152 0
drm_kms_helper 29297 1 radeon
yenta_socket 20536 1
tifm_7xx1 3690 0
rsrc_nonstatic 10559 1 yenta_socket
libipw 39896 1 ipw2200
drm 163034 5 radeon,ttm,drm_kms_helper
soundcore 6620 1 snd
tifm_core 6045 1 tifm_7xx1
pcmcia_core 32996 3 pcmcia,yenta_socket,rsrc_nonstatic
lib80211 5046 3 lib80211_crypt_tkip,ipw2200,libipw
led_class 2864 0
intel_agp 24415 0
psmouse 63245 0
serio_raw 3978 0
snd_page_alloc 7172 2 snd_intel8x0,snd_pcm
agpgart 31788 3 ttm,drm,intel_agp
i2c_algo_bit 5028 1 radeon
video 17375 0
output 1871 1 video
lp 7028 0
parport 32635 1 lp
usbhid 36174 0
hid 67032 1 usbhid
ohci1394 27238 0
tg3 109580 0
ieee1394 81213 1 ohci1394
tutti i comandi sono stati dati con audio funzionante