sean markham, thank you for reporting this and helping make Ubuntu better. As per below, when checking to see what happens when removing the package adwaita-icon-theme, apt warns it will remove core packages required for a desktop environment. Hence, this issue isn't a bug, but an instance of "I shot myself in the foot".
sudo apt-get remove adwaita-icon-theme Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: bolt ca-certificates-java chromium-codecs-ffmpeg-extra default-jre-headless fonts-dejavu-extra geoclue geoclue-ubuntu-geoip gir1.2-goa-1.0 gir1.2-snapd-1 gnome-applets-data gnome-flashback-common gnome-panel-data gnome-themes-extra gnome-themes-extra-data gtk2-engines-pixbuf indicator-common indicator-datetime indicator-keyboard indicator-messages indicator-power indicator-session indicator-sound java-common libaccounts-glib0 libactivation-java libapache-pom-java libatinject-jsr330-api-java libatk-wrapper-java libatk-wrapper-java-jni libbcmail-java libbcpkix-java libbcprov-java libcairo-gobject-perl libcommons-io-java libcommons-lang3-java libcommons-parent-java libcpufreq0 libept1.5.0 libfcitx-gclient1 libfcitx-utils0 libfontawesomefx-java libfontbox2-java libgeoclue0 libgeronimo-validation-1.0-spec-java libgettext-commons-java libgif7 libglib-object-introspection-perl libhibernate-validator-java libimgscalr-java libjackson2-core-java libjackson2-jr-java libjboss-logging-java liblightdm-gobject-1-0 liblogback-java libmail-java libmetadata-extractor-java libsambox-java libsejda-eventstudio-java libsejda-injector-java libsejda-io-java libsejda-java libslf4j-java libsysmetrics1 libtwelvemonkeys-java liburl-dispatcher1 libxmpcore-java metacity-common openjdk-11-jre-headless openjdk-8-jre-headless python-cairo python-gobject-2 ubuntu-touch-sounds Use 'sudo apt autoremove' to remove them. The following additional packages will be installed: libutempter0 lubuntu-icon-theme xterm Suggested packages: xfonts-cyrillic The following packages will be REMOVED: adwaita-icon-theme alacarte apport-gtk apturl caribou chromium-browser chromium-browser-l10n default-jre deja-dup eog evince evolution-data-server file-roller gdm3 gedit ghex gir1.2-caribou-1.0 gir1.2-clutter-1.0 gir1.2-gcr-3 gir1.2-gnomebluetooth-1.0 gir1.2-gnomedesktop-3.0 gir1.2-gtk-3.0 gir1.2-gtksource-3.0 gir1.2-gweather-3.0 gir1.2-mutter-1 gir1.2-mutter-2 gir1.2-nma-1.0 gir1.2-nmgtk-1.0 gir1.2-peas-1.0 gir1.2-rb-3.0 gir1.2-totem-1.0 gir1.2-vte-2.91 gir1.2-webkit2-4.0 gir1.2-wnck-3.0 gjs gmountiso gnome-applets gnome-bluetooth gnome-calculator gnome-characters gnome-control-center gnome-flashback gnome-getting-started-docs gnome-initial-setup gnome-panel gnome-power-manager gnome-screensaver gnome-session-flashback gnome-settings-daemon gnome-shell gnome-software gnome-software-plugin-snap gnome-startup-applications gnome-system-monitor gnome-terminal gnome-todo gnome-tweak-tool gnome-tweaks gnome-user-docs gnome-user-guide gnumeric-doc gparted gstreamer1.0-clutter-3.0 humanity-icon-theme ibus ibus-gtk3 ibus-table indicator-applet-complete indicator-application indicator-bluetooth indicator-printers isomaster language-selector-gnome libappindicator3-1 libavahi-ui-gtk3-0 libcanberra-gtk3-module libcaribou0 libcheese-gtk25 libcheese8 libclutter-1.0-0 libclutter-gst-3.0-0 libclutter-gtk-1.0-0 libcolord-gtk1 libedataserverui-1.2-1 libedataserverui-1.2-2 libevdocument3-4 libevview3-3 libgail-3-0 libgail-common libgail18 libgjs0g libglade2-0 libgnome-bluetooth13 libgspell-1-1 libgtk-3-bin libgtk2-perl libgtk2.0-0 libgtk2.0-bin libgtk3-perl libgtkhex-3-0 libgtkmm-2.4-1v5 libgtkmm-3.0-1v5 libgtksourceview-3.0-1 libgucharmap-2-90-7 libgweather-3-15 libido3-0.1-0 libindicator3-7 libmetacity1 libmutter-2-0 libnautilus-extension1a libnma0 libopenjfx-java libopenjfx-jni libpanel-applet3 libpeas-1.0-0 libreoffice-avmedia-backend-gstreamer libreoffice-gnome libreoffice-gtk3 librhythmbox-core10 libtotem0 libvte-2.91-0 libwnck-3-0 libyelp0 light-themes metacity mutter nautilus nautilus-extension-gnome-terminal nautilus-share network-manager-gnome network-manager-pptp-gnome notification-daemon openjdk-11-jre openjdk-8-jre openjfx orca pdfsam python-glade2 python-gtk2 python3-aptdaemon.gtk3widgets qt5-gtk-platformtheme remmina remmina-plugin-rdp remmina-plugin-secret remmina-plugin-vnc seahorse software-properties-gtk synaptic system-config-printer system-config-printer-common ubuntu-artwork ubuntu-desktop ubuntu-docs ubuntu-mono ubuntu-release-upgrader-gtk ubuntu-session ubuntu-software update-manager update-notifier usb-creator-gtk yelp zenity The following NEW packages will be installed: libutempter0 lubuntu-icon-theme xterm 0 upgraded, 3 newly installed, 162 to remove and 0 not upgraded. Need to get 3,111 kB of archives. After this operation, 520 MB disk space will be freed. Do you want to continue? [Y/n] n Abort. ** Changed in: xorg (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1768558 Title: At start-up displays only root terminal Status in xorg package in Ubuntu: Invalid Bug description: SORRY I thought I had a duplicate "adwaita-icon-theme" and removed the small. Now no regular start-up only root. Tried to reinstall thru package manager while using usb as start-up drive, but still only root at start-up. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic i686 ApportVersion: 2.20.1-0ubuntu2 Architecture: i386 CasperVersion: 1.376 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Wed May 2 14:29:14 2018 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) [8086:2a02] (rev 0c) (prog-if 00 [VGA controller]) Subsystem: Dell Mobile GM965/GL960 Integrated Graphics Controller (primary) [1028:01fe] Subsystem: Dell Mobile GM965/GL960 Integrated Graphics Controller (secondary) [1028:01fe] LiveMediaBuild: Lubuntu 16.04 LTS "Xenial Xerus" - Release i386 (20160420.1) MachineType: Dell Inc. Latitude D830 ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash --- SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/07/2007 dmi.bios.vendor: Dell Inc. dmi.bios.version: A02 dmi.board.name: 0HN341 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA02:bd06/07/2007:svnDellInc.:pnLatitudeD830:pvr:rvnDellInc.:rn0HN341:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Latitude D830 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.67-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1768558/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp