How to turn on Poky Audio on Netbook

On HP Mini netbook, we found the sound was always muted, and the hot key [F11] could not enable it.

Here are some command lines to enable the audio and adjust the volumn.

# amixer set Master on // Turn on the audio device

# amixer set Master NUM // To adjust the main volumn, between 0 and 64

# amixer set Speaker on // Turn on the speaker

# amixer set Speaker NUM // To adjust the speaker volumn, betwee 0 and 64

# amixer set Headphone on // Turn on the headphone

# amixer set Headphone NUM // To adjust the headphone volumn, betwee 0 and 64