Sound card stops working suddenly

[Surya Kiran]

Ubuntu 20.04 latest update.
With the latest update the sound goes off all of a sudden. Rebooting helps, but only for an hour or so. I tried re-installing alsa-base et al. No luck. PulseAudio Volume Control is not listing my soundcard at all.

I'm using NVIDIA GEForce GTX 1660Ti with NVIDIA 450.57 driver.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Wed Sep 23 19:55:43 2020
InstallCmdLine: file=/cdrom/preseed/kubuntu.seed maybe-ubiquity initrd=/casper/initrd quiet splash --- maybe-ubiquity
InstallationDate: Installed on 2020-07-31 (54 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
Symptom: installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Surya Kiran (suryakiran-gullapalli)]

What I found was every now and then the audio device profile is getting turned off, which is resulting in no audio.