[ProLiant MicroServer Gen8, Nvidia GPU 81 HDMI/DP, Digital Out, HDMI] Sound is distorted

[costinel]

this works ok with latest 5.3.x kernel but not with 4.15 kernel
kernel 5.0.0 does not work ok with zfs so I can't confirm it is fixed or not in 5.0.0

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base (not installed)
ProcVersionSignature: Ubuntu 4.15.0-70.79-generic 4.15.18
Uname: Linux 4.15.0-70-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
CurrentDesktop: LXDE
Date: Sat Nov 30 18:43:40 2019
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:NVidia failed
Symptom_Card: GP108 High Definition Audio Controller - HDA NVidia
Symptom_Jack: Digital Out, HDMI
Symptom_Type: Digital clip or distortion, or "overdriven" sound
Title: [ProLiant MicroServer Gen8, Nvidia GPU 81 HDMI/DP, Digital Out, HDMI] Sound is distorted
UpgradeStatus: Upgraded to bionic on 2018-08-22 (465 days ago)