笔记本装linux后不发声

wavehorse

我的笔记本芯片组是915GM，集成声卡，装的是ubuntu
lspci后显示
0000:00:00.0 Host bridge: Intel Corp. Mobile Memory Controller Hub (rev 03)
0000:00:02.0 VGA compatible controller: Intel Corp. Mobile Graphics Controller (rev 03)
0000:00:02.1 Display controller: Intel Corp. Mobile Graphics Controller (rev 03)
0000:00:1b.0 0403: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller (rev 04)
0000:00:1c.0 PCI bridge: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 (rev 04)
0000:00:1c.1 PCI bridge: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2 (rev 04)
0000:00:1c.2 PCI bridge: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 3 (rev 04)
0000:00:1d.0 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 04)
0000:00:1d.1 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 04)
0000:00:1d.2 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 04)
0000:00:1d.3 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 (rev 04)
0000:00:1d.7 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 04)
0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev d4)
0000:00:1f.0 ISA bridge: Intel Corp. 82801FBM (ICH6M) LPC Interface Bridge (rev 04)
0000:00:1f.1 IDE interface: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 04)
0000:00:1f.3 SMBus: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 04)
0000:06:06.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5788 Gigabit Ethernet (rev 03)
0000:06:07.0 CardBus bridge: Texas Instruments: Unknown device 8031
0000:06:07.2 FireWire (IEEE 1394): Texas Instruments: Unknown device 8032
0000:06:07.3 Unknown mass storage controller: Texas Instruments: Unknown device 8033
0000:06:08.0 Network controller: Intel Corp. PRO/Wireless 2200BG (rev 05)

lsmod后显示(似乎没有snd开头的项)

Module Size Used by
speedstep_lib 3940 0
proc_intf 3908 0
cpufreq_powersave 1632 0
cpufreq_userspace 4348 0
cpufreq_ondemand 6140 0
freq_table 4004 0
pcmcia 22244 2
i915 19552 1
drm 65172 2 i915
ipv6 257760 9
ipw2200 71820 0
firmware_class 9984 1 ipw2200
ieee80211 23332 1 ipw2200
ieee80211_crypt 5640 1 ieee80211
ohci1394 34596 0
yenta_socket 21344 0
pcmcia_core 57984 2 pcmcia,yenta_socket
tg3 84932 0
i2c_i801 8364 0
i2c_core 22320 1 i2c_i801
usbhid 31936 0
ehci_hcd 32708 0
uhci_hcd 32816 0
usbcore 119000 4 usbhid,ehci_hcd,uhci_hcd
pci_hotplug 33488 0
intel_agp 22140 1
agpgart 33608 3 drm,intel_agp
pcspkr 3496 0
rtc 12472 0
nls_iso8859_1 3936 4
nls_cp437 5600 4
vfat 13824 4
fat 41760 1 vfat
md 47440 0
dm_mod 59420 1
capability 4648 0
commoncap 7712 1 capability
tsdev 7520 0
evdev 9344 0
joydev 9664 0
sr_mod 17188 0
sbp2 23816 0
scsi_mod 127552 2 sr_mod,sbp2
ieee1394 108312 2 ohci1394,sbp2
psmouse 21320 0
mousedev 11288 1
parport_pc 37252 0
lp 11144 0
parport 36744 2 parport_pc,lp
ide_cd 41700 0
cdrom 40220 2 sr_mod,ide_cd
reiserfs 262960 1
ext2 66632 0
ext3 137256 0
jbd 60536 1 ext3
mbcache 8356 2 ext2,ext3
ide_generic 1312 0
ide_disk 20416 7
piix 10340 1
ide_core 129356 4 ide_cd,ide_generic,ide_disk,piix
unix 28276 740
processor 22452 0
fbcon 37504 0
font 8192 1 fbcon
bitblit 5472 1 fbcon
vesafb 6724 0
cfbcopyarea 3808 1 vesafb
cfbimgblt 2912 1 vesafb
cfbfillrect 3488 1 vesafb

另外在新立得中搜索alsa-utils，显示版本已经为最新1.0.8-lubuntu1

另外有一点要提到的，我的grub启动项里加了参数 acpi=off，如果不加这个参数，就启动不了ubuntu

有人建议我升级bios，但是我现在一时又下不到
不知道还有什么办法没？