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I first configure the sound card by alsaconf and get a successful result, and then adjust the master level in alsamixer to make sure it is on. But still when I play a audio file there is no sound. Do I miss something? This is the info from lspci | grep audio :
It depends on which mixer software you are using. For example I use Kmix since I use KDE. I can right click the speaker icon next to my clock and select "select master Channel". At the top of the window it will show me current active mixer HDA ATI SB. That is my on board sound card.
If you open your Mixer Window you should have a "help" menu with an "About" option. This will help you identify which mixer you are using.
Unloading ALSA sound driver modules: (none loaded).
Building card database...
Setting default volumes...
amixer: Mixer attach default error: No such file or directory
Now ALSA is ready to use.
For adjustment of volumes, use your favorite mixer.
Have a lot of fun!
It says "amixer: Mixer attach default error: No such file or directory". Does that have something to do with that error?