Public bug reported:
After upgrading to 26.04 using do-release-upgrade, apt keeps
caomplaining aobut a mdadm post installer script error. this is a
serious error, because everything related to apt now gets an exit
status=error.
Description: Ubuntu 26.04 LTS
Release: 26.04
pt-cache policy mdadm
mdadm:
Installed: 4.5-5ubuntu1
Candidate: 4.5-5ubuntu1
Version table:
*** 4.5-5ubuntu1 500
500 http://archive.ubuntu.com/ubuntu resolute/main amd64 Packages
100 /var/lib/dpkg/status
N: Ignoring file 'google-chrome.list.migrate' in directory
'/etc/apt/sources.list.d/' as it has an invalid filename extension
We should expect mdadm to install/ upgrade just fine as every other
package. Now it is haunting me with every apt related activity.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: ubuntu-release-upgrader-core 1:26.04.22
ProcVersionSignature: Ubuntu 7.0.0-22.22-generic 7.0.0
Uname: Linux 7.0.0-22-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Thu Jul 2 21:52:11 2026
InstallationDate: Installed on 2019-08-06 (2522 days ago)
InstallationMedia: Kubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: ubuntu-release-upgrader
UpgradeStatus: Upgraded to resolute on 2026-06-23 (9 days ago)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade resolute
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https://bugs.launchpad.net/bugs/2159012
Title:
apt gets stuck after release upgrade to 26.04, due to mdadm post
installer script error
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