[MS-7A33, Realtek ALC892, Green Line Out, Rear] Playback problem

[JFB]

Sound was working until today, when it suddenly stopped working.
Tried a lot of different checks, but with no success

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: alsa-base 1.0.25+dfsg-0ubuntu5
Uname: Linux 4.14.10-custom x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.7-0ubuntu3.9
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jf 19367 F.... pulseaudio
 /dev/snd/pcmC1D0c: jf 19367 F...m pulseaudio
 /dev/snd/pcmC1D0p: jf 19367 F...m pulseaudio
 /dev/snd/controlC1: jf 19367 F.... pulseaudio
CurrentDesktop: Unity:Unity7:ubuntu
Date: Fri Sep 28 18:00:58 2018
InstallationDate: Installed on 2017-12-31 (271 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=lb_LU.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic failed
Symptom_Card: HD-Audio Generic - HD-Audio Generic
Symptom_Jack: Green Line Out, Rear
Symptom_Type: None of the above
Title: [MS-7A33, Realtek ALC892, Green Line Out, Rear] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/20/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3.60
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: X370 SLI PLUS (MS-7A33)
dmi.board.vendor: MSI
dmi.board.version: 2.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 2.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3.60:bd09/20/2017:svnMSI:pnMS-7A33:pvr2.0:rvnMSI:rnX370SLIPLUS(MS-7A33):rvr2.0:cvnMSI:ct3:cvr2.0:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7A33
dmi.product.version: 2.0
dmi.sys.vendor: MSI

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 17.10 (artful) reached end-of-life on July 19, 2018.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.