Ubuntu 19.04 Upgrade bug report

[Cecilia Therese Lucas]

XPS-13-9343
Memory: 7.7 GiB
Processor: Intel Core i5-5200CPU @2.20 GHzx4
Graphics: Intel HD Graphics 5500 (Broadwell GT2)
OS Type: 64-bit
Memory 7.7 GiB

Started from 18.10 upgrading to 19.04

Message: "Could not install 'install-info': Triggers looping, abandoned. The upgrad will continue but the 'install-info' package may not be in a working state. You may want to report a bug."

on continue:

"Could not install the upgrades. The upgrade has been aborted. Your system could be in an unusable state. A recovery will run now (dpkg - configue -a

The Dell "About this system" cites 19.04 as OS, but:
a restart never updated firmware (as did our identical machine)

From terminl ubuntu-bug:
[7604:7604:0422/093757.171962:ERROR:sandbox_linux.cc(364)] InitializeSandbox() called with multiple threads in process gpu-process.

apt-cache policy pkgname
N: Unable to locate package pkgname

Software Updater claims we are up to date.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubuntu-release-upgrader-core 1:19.04.16.1
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 22 09:36:15 2019
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-20140620-0
InstallationDate: Installed on 2017-07-11 (649 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20140620-04:25
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
Symptom: dist-upgrade
UpgradeStatus: Upgraded to disco on 2019-04-22 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update-manager.release-upgrades: 2018-08-24T10:37:04.191533

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Brian Murray (brian-murray)]

From VarLogDistupgradeApttermlog.txt:

dpkg: cycle found while processing triggers:
 chain of packages whose triggers are or may be responsible:
  bamfdaemon -> mime-support
 packages' pending triggers which are or may be unresolvable:
  install-info: /usr/share/info
  sgml-base: /usr/share/xml: update-sgmlcatalog: /etc/sgml: /usr/share/sgml
  linux-image-5.0.0-13-generic: linux-update-5.0.0-13-generic
  shared-mime-info: /usr/share/mime/packages
  dbus: /etc/dbus-1/system.d
  ca-certificates: update-ca-certificates
  gnome-icon-theme: /usr/share/icons/gnome
  resolvconf: resolvconf-enable-updates
  systemd: /etc/init.d
  libc-bin: ldconfig
  libgtk2.0-0:amd64: /usr/lib/x86_64-linux-gnu/gtk-2.0/2.10.0/immodules
  dictionaries-common: update-default-ispell: update-default-wordlist: aspell-autobuildhash
  doc-base: /usr/share/doc-base
  hicolor-icon-theme: /usr/share/icons/hicolor
  initramfs-tools: update-initramfs
  mime-support: /usr/share/applications: /usr/lib/mime/packages
  bamfdaemon: gmenucache: /usr/share/applications
dpkg: error processing package install-info (--configure):
 triggers looping, abandoned