Public bug reported:
package failed during partial upgrade - would not do full upgrade
ProblemType: Package
DistroRelease: Ubuntu 26.04
Package: grub-pc 2.14-2ubuntu2.1
ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6
Uname: Linux 7.0.0-27-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckMismatches: ./casper/minimal.enhanced-secureboot.en.squashfs
CasperMD5CheckResult: fail
Date: Mon Aug 31 05:16:43 2026
ErrorMessage: old grub-pc package postinst maintainer script subprocess failed
with exit status 1
EtcDefaultGrubD.kdump-tools.cfg:
GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M"
InstallationDate: Installed on 2026-06-27 (65 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-27-generic
root=UUID=9c40d49b-fab2-4e52-8f80-cf916de14ec3 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
Python3Details: /usr/bin/python3.14, Python 3.14.4, python3-minimal,
3.14.3-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
dpkg 1.23.7ubuntu1
apt 3.2.0
SourcePackage: grub2
Title: package grub-pc 2.14-2ubuntu2.1 failed to install/upgrade: old grub-pc
package postinst maintainer script subprocess failed with exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-package resolute
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https://bugs.launchpad.net/bugs/2165896
Title:
package grub-pc 2.14-2ubuntu2.1 failed to install/upgrade: old grub-pc
package postinst maintainer script subprocess failed with exit status
1
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