You have been subscribed to a public bug:
After suspend to RAM sound device changes from default HDMI to S/PDIF. After
changing it again to HDMI right speaker stops to respond. I can hear only the
sound from left speaker during sound test from the settings menu.
After the first wake from suspend you can find in messages from dmesg:
[ 68.362807] pcieport 0000:00:01.3: PME: Spurious native interrupt!
[ 68.527845] nvme nvme0: 15/0/0 default/read/poll queues
[ 68.533836] snd_hda_intel 0000:0a:00.1: spurious response 0x80000000:0x0,
last cmd=0x6f2f03
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30
Uname: Linux 5.4.0-28-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia zfs zunicode zavl icp zcommon
znvpair
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jaroslaw 2972 F.... pulseaudio
/dev/snd/controlC1: jaroslaw 2972 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed May 6 18:32:10 2020
InstallationDate: Installed on 2020-05-03 (3 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=pl_PL.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:NVidia failed
Symptom_Card: GP106 High Definition Audio Controller - HDA NVidia
Symptom_Jack: Digital Out, HDMI
Symptom_Type: None of the above
Title: [AB350N-Gaming WIFI, Nvidia GPU 84 HDMI/DP, Digital Out, HDMI] Playback
problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/27/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F50a
dmi.board.asset.tag: Default string
dmi.board.name: AB350N-Gaming WIFI-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: Default string
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF50a:bd11/27/2019:svnGigabyteTechnologyCo.,Ltd.:pnAB350N-GamingWIFI:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnAB350N-GamingWIFI-CF:rvrDefaultstring:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: AB350N-Gaming WIFI
dmi.product.sku: Default string
dmi.product.version: Default string
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
--
[Nvidia HDMI] After suspend to ram sound output device changes from HDMI to
S/PDIF
https://bugs.launchpad.net/bugs/1877154
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