You may need to run the following from a terminal:
sudo apt-get install -f
sudo apt-get clean
sudo apt-get update
Then re-install the package or updates.
If that does not resolve your issue, please mark the bug as "Confirmed"
** Changed in: linux-signed (Ubuntu)
Importance: Undecided => Low
** Changed in: linux-signed (Ubuntu)
Status: New => Incomplete
** Package changed: linux-signed (Ubuntu) => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1774881
Title:
package linux-image-4.15.0-20-generic 4.15.0-20.21 failed to
install/upgrade: installed linux-image-4.15.0-20-generic package pre-
removal script subprocess returned error exit status 1
Status in linux package in Ubuntu:
Incomplete
Bug description:
Happened after a reboot after a kernel update.
ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-20-generic 4.15.0-20.21
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
Uname: Linux 4.15.0-22-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.1
Architecture: amd64
Date: Sun Jun 3 17:41:51 2018
ErrorMessage: installed linux-image-4.15.0-20-generic package pre-removal
script subprocess returned error exit status 1
InstallationDate: Installed on 2018-01-21 (132 days ago)
InstallationMedia: Xubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105)
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal,
2.7.15~rc1-1
RelatedPackageVersions:
dpkg 1.19.0.5ubuntu2
apt 1.6.1
SourcePackage: linux-signed
Title: package linux-image-4.15.0-20-generic 4.15.0-20.21 failed to
install/upgrade: installed linux-image-4.15.0-20-generic package pre-removal
script subprocess returned error exit status 1
UpgradeStatus: Upgraded to bionic on 2018-04-30 (34 days ago)
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