Public bug reported:
While upgrading my Raspberry Pi 4B last night from 24.04 to 26.04 (`do-
release-upgrade -m server`), the upgrade ended with this error.
The upgrade proceeded fine otherwise.
RPi 4B is listed as supported, as far as I know.
I updated EEPROM before beginning the upgrade.
update-initramfs succeeds after manually installing `piboot-try`, and
that clears the error.
ProblemType: Package
DistroRelease: Ubuntu 26.04
Package: initramfs-tools 0.151ubuntu1
ProcVersionSignature: Ubuntu 6.8.0-1065.69-raspi 6.8.12
Uname: Linux 6.8.0-1065-raspi aarch64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: arm64
CasperMD5CheckResult: unknown
CloudArchitecture: aarch64
CloudBuildName: server
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSerial:
CloudSubPlatform: config-disk (/dev/mmcblk0p1)
Date: Thu Nov 5 06:27:05 2026
ErrorMessage: old initramfs-tools package postinst maintainer script subprocess
failed with exit status 1
ImageMediaBuild: 20200731
PackageArchitecture: all
Python3Details: /usr/bin/python3.14, Python 3.14.4, python3-minimal,
3.14.3-0ubuntu2
PythonDetails: N/A
RebootRequiredPkgs: Error: path contained symlinks.
RelatedPackageVersions:
dpkg 1.23.7ubuntu1
apt 3.2.1ubuntu0.1
SourcePackage: initramfs-tools
Title: package initramfs-tools 0.151ubuntu1 failed to install/upgrade: old
initramfs-tools package postinst maintainer script subprocess failed with exit
status 1
UpgradeStatus: Upgraded to resolute on 2026-11-05 (1 days ago)
** Affects: initramfs-tools (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-package arm64 arm64-image cloud-image raspi-image resolute
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https://bugs.launchpad.net/bugs/2173516
Title:
package initramfs-tools 0.151ubuntu1 failed to install/upgrade: old
initramfs-tools package postinst maintainer script subprocess failed
with exit status 1
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