Thanks for responding. I think this report was triggered by a new linux image installation failing because of lack of space in the /boot partition.
A re-install, using aptitude, after removing old kernels, had already resolved the issue before submitting the report.
The report was auto generated after a reboot. I filled and it as appropriate, then realized it was a duplicate.
It is a non-bug as such and may be closed :).

Best regards,
Mustafa
  
> On Jun 19, 2018, at 9:09 AM, Joseph Salisbury <email address hidden> wrote:
> 
> 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 (Ubuntu)
>   Importance: Undecided => Low
> 
> ** Changed in: linux (Ubuntu)
>       Status: Confirmed => Incomplete
> 
> -- 
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1777204
> 
> Title:
>  package linux-image-4.15.0-23-lowlatency (not installed) failed to
>  install/upgrade: installed linux-image-4.15.0-23-lowlatency package
>  pre-removal script subprocess returned error exit status 1
> 
> Status in linux package in Ubuntu:
>  Incomplete
> 
> Bug description:
>  Known bug, worked around by removing old kernels.
> 
>  ProblemType: Package
>  DistroRelease: Ubuntu 18.10
>  Package: linux-image-4.15.0-23-lowlatency (not installed)
>  ProcVersionSignature: Ubuntu 4.15.0-24.26-lowlatency 4.15.18
>  Uname: Linux 4.15.0-24-lowlatency x86_64
>  ApportVersion: 2.20.10-0ubuntu3
>  Architecture: amd64
>  AudioDevicesInUse:
>   USER        PID ACCESS COMMAND
>   /dev/snd/controlC0:  gdm        2193 F.... pulseaudio
>                        mlthost    2767 F.... pulseaudio
>  Date: Fri Jun 15 19:32:44 2018
>  ErrorMessage: installed linux-image-4.15.0-23-lowlatency package pre-removal script subprocess returned error exit status 1
>  HibernationDevice: RESUME=UUID=8fe6b1c9-1cbd-491d-b1fb-28cb0310bbe4
>  InstallationDate: Installed on 2017-07-18 (332 days ago)
>  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
>  Lsusb:
>   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
>   Bus 001 Device 004: ID 8087:0a2b Intel Corp. 
>   Bus 001 Device 003: ID 413c:2113 Dell Computer Corp. 
>   Bus 001 Device 002: ID 046d:c077 Logitech, Inc. M105 Optical Mouse
>   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>  MachineType: Dell Inc. OptiPlex 5050
>  ProcFB: 0 inteldrmfb
>  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-24-lowlatency root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
>  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
>  Python3Details: /usr/bin/python3.6, Python 3.6.6rc1, python3-minimal, 3.6.5-3
>  PythonDetails: /usr/bin/python2.7, Python 2.7.15, python-minimal, 2.7.15-3
>  RelatedPackageVersions: grub-pc 2.02-2ubuntu10
>  SourcePackage: linux
>  Title: package linux-image-4.15.0-23-lowlatency (not installed) failed to install/upgrade: installed linux-image-4.15.0-23-lowlatency package pre-removal script subprocess returned error exit status 1
>  UpgradeStatus: No upgrade log present (probably fresh install)
>  dmi.bios.date: 05/06/2017
>  dmi.bios.vendor: Dell Inc.
>  dmi.bios.version: 1.3.11
>  dmi.board.name: 0782GW
>  dmi.board.vendor: Dell Inc.
>  dmi.board.version: A00
>  dmi.chassis.type: 3
>  dmi.chassis.vendor: Dell Inc.
>  dmi.modalias: dmi:bvnDellInc.:bvr1.3.11:bd05/06/2017:svnDellInc.:pnOptiPlex5050:pvr:rvnDellInc.:rn0782GW:rvrA00:cvnDellInc.:ct3:cvr:
>  dmi.product.family: OptiPlex
>  dmi.product.name: OptiPlex 5050
>  dmi.sys.vendor: Dell Inc.
> 
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