dconf-editor causes problems for standby/sleep in Ubuntu 17.10

[3guesses]

$ lsb_release -rd
Description: Ubuntu 17.10
Release: 17.10

$ apt-cache policy dconf-editor
dconf-editor:
  Installed: 3.26.1-1
  Candidate: 3.26.1-1
  Version table:
 *** 3.26.1-1 500
        500 http://gb.archive.ubuntu.com/ubuntu artful/universe amd64 Packages
        100 /var/lib/dpkg/status

After installing dconf-editor (via "Software") the standby/sleep function malfunctions, specifically when trying to come out of standby/sleep. I put my laptop to sleep by pressing the power button, and then wake it up again by pressing the power button. However, when I try to wake it up it is not possible to unlock it: roughly every second, whatever I have typed into the password field gets cleared out as if I had submitted it by pressing the return key, but unfortunately 1 second is not enough time to type in the password completely so it's impossible to unlock it again. Occasionally, when I pressed the Cancel button the GUI would close and I would be presented with the command line which would fill up with lines saying:

EXT4-fs error (device sda5): ext4_find_entry:1431: inode #912129: comm dbus-daemon: reading directory lbloc
EXT4-fs error (device sda5): ext4_find_entry:1431: inode #403586: comm dbus-daemon: reading directory lbloc
EXT4-fs error (device sda5): ext4_find_entry:1431: inode #260609: comm gdm3: reading directory lblock 0
EXT4-fs error (device sda5): ext4_find_entry:1431: inode #260609: comm gdm3: reading directory lblock 0

These lines are then repeated ad infinitum.

I uninstalled dconf-editor and rebooted and the problem went away. I re-installed dconf-editor and there was still no problem. I then rebooted and that is when the problem resurfaced. I am using a clean install of Ubuntu 17.10 I believe the only other packages I have installed are gparted, net-tools and ethtool. My set-up is fairly unusual: I am using a Toshiba Satellite L50T-a-145 laptop. It has no hard drive and I have installed Ubuntu to a 128GB USB 3.0 Lexar S3 JumpDrive.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: dconf-editor 3.26.1-1
ProcVersionSignature: Ubuntu 4.13.0-38.43-generic 4.13.16
Uname: Linux 4.13.0-38-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.8
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Apr 22 14:43:56 2018
InstallationDate: Installed on 2018-04-13 (8 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: dconf-editor
UpgradeStatus: No upgrade log present (probably fresh install)