sounds like you need to sort this out yourself:
Error! Could not locate dkms.conf file.
File: /var/lib/dkms/soundwire/1.3.0/source/dkms.conf does not exist.
...fail!
run-parts: /etc/kernel/header_postinst.d/dkms exited with return code 4
** Changed in: linux-oem-5.6 (Ubuntu)
Status: New => Invalid
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Packages, which is subscribed to linux-oem-5.6 in Ubuntu.
https://bugs.launchpad.net/bugs/1893816
Title:
package linux-headers-5.6.0-1023-oem 5.6.0-1023.23 failed to
install/upgrade: installed linux-headers-5.6.0-1023-oem package post-
installation script subprocess returned error exit status 1
Status in linux-oem-5.6 package in Ubuntu:
Invalid
Bug description:
automatically appeared when I tried sudo apt-get upgrade
ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: linux-headers-5.6.0-1023-oem 5.6.0-1023.23
Uname: Linux 5.8.1-050801-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Sep 1 10:44:24 2020
ErrorMessage: installed linux-headers-5.6.0-1023-oem package
post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2020-08-04 (27 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal,
3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
dpkg 1.19.7ubuntu3
apt 2.0.2ubuntu0.1
SourcePackage: linux-oem-5.6
Title: package linux-headers-5.6.0-1023-oem 5.6.0-1023.23 failed to
install/upgrade: installed linux-headers-5.6.0-1023-oem package
post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
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