Dell Optiplex Chassis Sound with Pulseaudio

[Gábor Hársfalvi]

Dear Users!

I've installed Pulseaudio in Jessie x64 and I'd like to use my PC internal
chassis speaker.

Now anything I choose in Pavucontrol and Pulseadio Sound-settings the
music/sound always silent - and nothing muted.

Please help me!

Thanks!