usrmerge failed during upgrade to 22.04 - both /lib64/ld-linux-x86-64.so.2 and /usr/lib64/ld-linux-x86-64.so.2 exist

[Mikkel Christensen]

This was a very obscure error during upgrade from one LTS release to another.

I finally (apparently) fixed it by running:

  sudo ln -s -f /usr/lib64/ld-linux-x86-64.so.2 ld-linux-x86-64.so.2

  sudo /usr/lib/usrmerge/convert-usrmerge

I guess stuff like this is why even Ubuntu Linux is still only used by software developers (like me) and other technical adventurers.

ProblemType: Package
DistroRelease: Ubuntu 22.04
Package: usrmerge 25ubuntu2
ProcVersionSignature: Ubuntu 5.15.0-69.76-lowlatency 5.15.87
Uname: Linux 5.15.0-69-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.3
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Sun Apr 9 00:52:21 2023
ErrorMessage: installed usrmerge package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2018-01-13 (1911 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
Python3Details: /usr/bin/python3.10, Python 3.10.6, python3-minimal, 3.10.6-1~22.04
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.21.1ubuntu2.1
 apt 2.4.8
SourcePackage: usrmerge
Title: package usrmerge 25ubuntu2 failed to install/upgrade: installed usrmerge package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to jammy on 2023-04-09 (0 days ago)