Hp-compaq notebook,no sound in ubuntu 9.04

I just upgrade to ubuntu9.04, and im still facing the no sound problem when i was using ubuntu 8.10
the only sound i can hear is the non-stop drum sound from my headphone.
i had already upgrade the alsa to 1.0.19
but it doesn't work 2.

this is all the info about my laptop：

derren@vf25f:~$ hwinfo --sound
28: PCI 1b.0: 0403 Audio device
  [Created at pci.314]
  UDI: /org/freedesktop/Hal/devices/pci_8086_293e
  Unique ID: u1Nb.ymTDDUiFrW9
  SysFS ID: /devices/pci0000:00/0000:00:1b.0
  SysFS BusID: 0000:00:1b.0
  Hardware Class: sound
  Model: "Intel 82801I (ICH9 Family) HD Audio Controller"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x293e "82801I (ICH9 Family) HD Audio Controller"
  SubVendor: pci 0x103c "Hewlett-Packard Company"
  SubDevice: pci 0x3607
  Revision: 0x03
  Driver: "HDA Intel"
  Driver Modules: "snd_hda_intel"
  Memory Range: 0x9c500000-0x9c503fff (rw,non-prefetchable)
  IRQ: 22 (no events)
  Module Alias: "pci:v00008086d0000293Esv0000103Csd00003607bc04sc03i00"
  Driver Info #0:
    Driver Status: snd_hda_intel is active
    Driver Activation Cmd: "modprobe snd_hda_intel"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
derren@vf25f:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: STAC92xx Digital [STAC92xx Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 3: INTEL HDMI [INTEL HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
derren@vf25f:~$ cat /dev/sndstat
Sound Driver:3.8.1a-980706 (ALSA v1.0.18rc3 emulation code)
Kernel: Linux vf25f 2.6.28-11-generic #41-Ubuntu SMP Wed Apr 8 04:38:53 UTC 2009 i686
Config options: 0

Installed drivers:
Type 10: ALSA emulation

Card config:
HDA Intel at 0x9c500000 irq 22

Audio devices:
0: STAC92xx Analog (DUPLEX)

Synth devices: NOT ENABLED IN CONFIG

Midi devices: NOT ENABLED IN CONFIG

Timers:
31: system timer

Mixers:
0: Intel G45 DEVCTG
derren@vf25f:~$ lspci -nn
00:00.0 Host bridge [0600]: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub [8086:2a40] (rev 07)
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
00:02.1 Display controller [0380]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a43] (rev 07)
00:1a.0 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 [8086:2937] (rev 03)
00:1a.1 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 [8086:2938] (rev 03)
00:1a.7 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 [8086:293c] (rev 03)
00:1b.0 Audio device [0403]: Intel Corporation 82801I (ICH9 Family) HD Audio Controller [8086:293e] (rev 03)
00:1c.0 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 [8086:2940] (rev 03)
00:1c.1 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 [8086:2942] (rev 03)
00:1c.2 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 [8086:2944] (rev 03)
00:1c.3 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 [8086:2946] (rev 03)
00:1c.4 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 [8086:2948] (rev 03)
00:1c.5 PCI bridge [0604]: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 [8086:294a] (rev 03)
00:1d.0 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 [8086:2934] (rev 03)
00:1d.1 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 [8086:2935] (rev 03)
00:1d.2 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 [8086:2936] (rev 03)
00:1d.3 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 [8086:2939] (rev 03)
00:1d.7 USB Controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 [8086:293a] (rev 03)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev 93)
00:1f.0 ISA bridge [0601]: Intel Corporation ICH9M LPC Interface Controller [8086:2919] (rev 03)
00:1f.2 SATA controller [0106]: Intel Corporation ICH9M/M-E SATA AHCI Controller [8086:2929] (rev 03)
00:1f.3 SMBus [0c05]: Intel Corporation 82801I (ICH9 Family) SMBus Controller [8086:2930] (rev 03)
03:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g [14e4:4315] (rev 01)
04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)
05:00.0 System peripheral [0880]: JMicron Technologies, Inc. SD/MMC Host Controller [197b:2382]
05:00.2 SD Host controller [0805]: JMicron Technologies, Inc. Standard SD Host Controller [197b:2381]
05:00.3 System peripheral [0880]: JMicron Technologies, Inc. MS Host Controller [197b:2383]
05:00.4 System peripheral [0880]: JMicron Technologies, Inc. xD Host Controller [197b:2384]
derren@vf25f:~$ lsmod | grep snd
snd_hda_intel 435636 5
snd_pcm_oss 46336 0
snd_mixer_oss 22656 1 snd_pcm_oss
snd_pcm 82948 3 snd_hda_intel,snd_pcm_oss
snd_timer 29704 2 snd_pcm
snd 62628 13 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore 15200 1 snd
snd_page_alloc 16904 2 snd_hda_intel,snd_pcm
derren@vf25f:~$
derren@vf25f:~$ cat /proc/asound/card*/codec* | grep Codec
Codec: IDT 92HD71B7X
Codec: LSI ID 1040
Codec: Intel G45 DEVCTG
derren@vf25f:~$ grep audio /etc/group
audio:x:29:pulse
derren@vf25f:~$ alsactl -v
alsactl version 1.0.19

anyone can help ??

thks...