cat /proc/asound/cards
 0 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xf9f78000 irq 20
lspci | grep -i audio 
00:08.0 Audio device: NVIDIA Corporation MCP79 High Definition Audio (rev b1)

aplay /usr/share/sounds/alsa/Front_Center.wav
Wiedergabe: WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate: 48000 Hz, mono

aplay -l 
**** Liste der Hardware-Geräte (PLAYBACK) ****
Karte 0: NVidia [HDA NVidia], Gerät 3: HDMI 0 [HDMI 0]
  Sub-Geräte: 1/1
  Sub-Gerät #0: subdevice #0

cat /proc/asound/modules 
 0 snd_hda_intel


alsamixer
Gerät: HDA NVidia
│    Chip: Nvidia MCP79/7A HDMI                                                                      
│ Ansicht: F3:[Wiedergabe] F4: Aufnahme  F5: Alle                                                 
│ Element: S/PDIF