No sound and alsamixer error:
 

I have encounter this problem when try to play music with MPlayer.

1. There is no sound at all, movie can be played without sound
2. I have installed alsa-lib and alsa-utils no problem at all, but it seems the sound card is not recognized.
3. in kernel there is not intel sound card nor Nvidia sound card driver that can be enabled (correct me if I am wrong)

This is the `lspci` and `alsamixer` commands result that I have tried (in the attachments):

please post output from teminal in code tags not images it makes it MUCH easier for everyone