Comment 2 for bug 319971

I am having the same problem, only it affects me (no sound) when the volume level is less than 50% and no matter how I adjust the master volume. I have a gateway mx6448 and my sound card info is:

scandido@scl:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 6: Si3054 Modem [Si3054 Modem]
Subdevices: 1/1
Subdevice #0: subdevice #0

There are more people having the same problem at this thread:

http://ubuntuforums.org/showthread.php?p=6694287#post6694287

and the requested debugging information, from my computer, is online at

http://www.alsa-project.org/db/?f=ebc8a373dd05cefed35c49bedad38f8905f32ab4

Thanks in advance for any help you can provide.