Linux version 4.9.0-6-amd64 (debian-kernel@lists.debian.org) (gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1) ) #1 SMP Debian 4.9.82-1+deb9u3 (2018-03-02)

trex@beast:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

trex@beast:~$ lspci -nn | grep -i audio
00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-LP HD Audio [8086:9d71] (rev 21)

trex@beast:~$ sudo dmesg | grep -i error | grep -v "wifi|fs"
[   28.220604] snd_hda_intel 0000:00:1f.3: Codec #0 probe error; disabling it...

sudo apt-get install --reinstall linux-image-`uname -r`
sudo modprobe snd-hda-intel
rm -r ~/.config/pulse*
pulseaudio -k

Aug  7 11:37:34 zeta pulseaudio[22178]: D: [pulseaudio] module-udev-detect.c: /devices/pci0000:00/0000:00:1f.3/sound/card0 is busy: yes