This sound device does not have any controls

[omlx2]

hi to all>>>
i have sound problem ,,,the sound suddenly stop>>
i tried to solve it but i couldn't
am using 11.04


aplay -l
**** List of PLAYBACK Hardware Devices ****

~$ alsamixer
This sound device does not have any controls
~$ cat /proc/asound/cards
0 [Intel ]: HDA-Intel - HDA Intel
HDA Intel at 0xb0000000 irq 43

and
sudo lspci -v

00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
Subsystem: Lenovo Device 2066
Flags: bus master, fast devsel, latency 0, IRQ 43
Memory at b0000000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [130] Root Complex Link
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel




:~$ cat /proc/asound/versionAdvanced Linux Sound Architecture Driver Version 1.0.23.


http://www.alsa-project.org/db/?f=b4...117101fd607b4f