Sound card (and usb camera/Mic) No longer Recognized after kernal 5.8.0-36-generic update Today 1-9-2021

[Orangemule4u]

1-12-2021 sorry new to bug reporting saw Norbert's response below and reverted to kernal 5.4... Work-around has system back up and running!

1-12-2021
re-installed kernal but mate-media package still does not recognize sound card Asus Xoner found by lspci at 03:00.0 Multimedia audio controller: C-Media Electronics Inc CMI8788 [Oxygen HD Audio]

used: sudo apt-get install --reinstall linux-image-generic linux-image-5.8.0-36-generic
and rebooted

1-9-2021
the sound card and camera no longer show up in sound preferences hardware list since update today.

Alsa mixer no longer seems to be installed which i used to use for adjusting settings too. Booting from previous kernal in grub recognizes Asus Xonar sound card and usb camera just fine. Onboard sound previously broken hence the need to install sound card.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: mate-media 1.24.0-1
ProcVersionSignature: Ubuntu 5.8.0-36.40~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-36-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Sat Jan 9 22:36:56 2021
ExecutablePath: /usr/bin/mate-volume-control
InstallationDate: Installed on 2020-04-26 (258 days ago)
InstallationMedia: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 LANGUAGE=en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: mate-media
UpgradeStatus: No upgrade log present (probably fresh install)

[Norbert (nrbrtx)]

You have to reboot the system and select kernel 5.4 in the GRUB menu.

Then remove problematic 5.8 HWE kernel with commands below:

```
sudo apt-get purge linux-generic-hwe-20.04 linux-image-generic-hwe-20.04 linux-headers-generic-hwe-20.04 "linux-*5.8*"
```

Then install normal GA kernel instead by running command:

```
sudo apt-get install linux-generic linux-image-generic linux-headers-generic
```

Reboot with GA Linux 5.4.