ubuntu9.10安装成功后，默认会打开声卡的省电功能，而这种省电功能给我的Lenovo 10笔记本带来了烦人的噪声。
When ubuntu9.10 was installed successfully, audio power saving mode will be enabled by default, but this function brings boring pop noise to my Lenovo 410 Laptop.
下面的命令用来，关闭声卡的自动省电功能：
Following command can be used for disabling the audio power saving mode:
注意： 请注意shell的格式， > 符号两边的空格需要保留。
Reference Link:
my pleasure.
