package memtest86+ 5.31b+dfsg-4 failed to install/upgrade: installed memtest86+ package post-installation script subprocess returned error exit status 64

[Robin Bräck]

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ProblemType: Package
DistroRelease: Ubuntu 22.04
Package: memtest86+ 5.31b+dfsg-4
ProcVersionSignature: Ubuntu 5.13.0-40.45-generic 5.13.19
Uname: Linux 5.13.0-40-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
CasperMD5CheckResult: pass
Date: Wed May 4 21:55:37 2022
ErrorMessage: installed memtest86+ package post-installation script subprocess returned error exit status 64
InstallationDate: Installed on 2022-04-25 (9 days ago)
InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
Python3Details: /usr/bin/python3.10, Python 3.10.4, python3-minimal, 3.10.4-0ubuntu2
PythonDetails: N/A
RebootRequiredPkgs: Error: path contained symlinks.
RelatedPackageVersions:
 dpkg 1.21.1ubuntu2
 apt 2.4.5
SourcePackage: grub2
Title: package memtest86+ 5.31b+dfsg-4 failed to install/upgrade: installed memtest86+ package post-installation script subprocess returned error exit status 64
UpgradeStatus: Upgraded to jammy on 2022-05-04 (0 days ago)
modified.conffile..etc.grub.d.20_memtest86.: [deleted]

[Fantu (fantonifabio)]

Hi, thanks for report, from logs:

...
Configuration file '/etc/grub.d/20_memtest86+'
 ==> Deleted (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ? Your options are:
    Y or I : install the package maintainer's version
    N or O : keep your currently-installed version
      D : show the differences between the versions
      Z : start a shell to examine the situation
 The default action is to keep your current version.
*** 20_memtest86+ (Y/I/N/O/D/Z) [default=N] ? n
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
/usr/sbin/grub-probe: error: failed to get canonical path of `/boot/grub/unicode.pf2'.
No path or device is specified.
Usage: grub-probe [OPTION...] [OPTION]... [PATH|DEVICE]
Try 'grub-probe --help' or 'grub-probe --usage' for more information.
dpkg: error processing package memtest86+ (--configure):
 installed memtest86+ package post-installation script subprocess returned error exit status 64

I suppose is unexpected cases of you custom grub configuration keeped or another unexpected cases with grub but in this latest case I need more informations to understand how to avoid it (if possible from memtest86+ package)