[ASUS Vivo AIO V241DA_M241DA, Realtek ALC294, Speaker, Internal] fails after a while

[Cyrille Caron]

sounds stops after few seconds
I tried to modify the list order of the sound cards as alsamixer was showing me that the chip ATI R6xx HDMI set as 0 HD-Audio Generic seems to have no output when the chip Realtek ALC294 set as 1 HD-Audio Generic displays all controls
That's why I did edit /etc/modprobe.d/alsa-base.conf
I also tried to change with sudo nano /etc/group
audio:x:29:pulse to audio:x:29:cyrille
as advised there
https://fluoblog.wordpress.com/2008/01/13/resolution-des-problemes-de-son-sous-ubuntu/
but it didn't seem to have made any change as grep 'audio' /etc/group returns audio:x:29:pulse

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-53.59~18.04.1-generic 5.4.65
Uname: Linux 5.4.0-53-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.20
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Nov 19 09:57:10 2020
InstallationDate: Installed on 2020-11-05 (13 days ago)
InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: HD-Audio Generic - HD-Audio Generic
Symptom_Jack: Speaker, Internal
Symptom_PulseAudioLog: nov. 19 08:38:26 cyrille-ASUS-Vivo-AIO-V241DA-M241DA dbus-daemon[819]: [system] Activating via systemd: service name='org.freedesktop.RealtimeKit1' unit='rtkit-daemon.service' requested by ':1.37' (uid=121 pid=1237 comm="/usr/bin/pulseaudio --daemonize=no " label="unconfined")
Symptom_Type: Sound works for a while, then breaks
Title: [ASUS Vivo AIO V241DA_M241DA, Realtek ALC294, Speaker, Internal] fails after a while
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/18/2020
dmi.bios.vendor: ASUSTeK COMPUTER INC.
dmi.bios.version: V241DA.300
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: V241DA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 13
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnASUSTeKCOMPUTERINC.:bvrV241DA.300:bd05/18/2020:svnASUSTeKCOMPUTERINC.:pnASUSVivoAIOV241DA_M241DA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnV241DA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct13:cvr1.0:
dmi.product.family: ASUS Vivo AIO
dmi.product.name: ASUS Vivo AIO V241DA_M241DA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2020-11-19T09:44:02.150839