ubiquity-dm: starting
ubiquity-dm: plymouth
ubiquity-dm: start X ['X', '-br', '-ac', '-noreset', '-nolisten', 'tcp', '-background', 'none', 'vt1', ':0']

X.Org X Server 1.19.3
Release Date: 2017-03-15
X Protocol Version 11, Revision 0
Build Operating System: Linux 4.4.0-87-generic x86_64 Ubuntu
Current Operating System: Linux ubuntu 4.10.0-28-generic #32~16.04.2-Ubuntu SMP Thu Jul 20 10:19:48 UTC 2017 x86_64
Kernel command line: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid boot=casper only-ubiquity quiet splash ---
Build Date: 25 July 2017  01:30:08PM
xorg-server 2:1.19.3-1ubuntu1~16.04.2 (For technical support please see http://www.ubuntu.com/support) 
Current version of pixman: 0.33.6
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Fri Dec 22 09:17:48 2017
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
ubiquity-dm: set vars
ubiquity-dm: pam_open_session
ubiquity-dm: dm-scripts
ubiquity-dm: dbus
ubiquity-dm: dconf-service
ubiquity-dm: start frontend gtk_ui
Gtk-Message: Failed to load module "overlay-scrollbar"

** (unity-settings-daemon:1870): WARNING **: Unable to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
Gtk-Message: Failed to load module "overlay-scrollbar"
Gtk-Message: Failed to load module "overlay-scrollbar"
initctl: UPSTART_SESSION isn't set in the environment. Unable to locate the Upstart instance.

(process:1932): indicator-sound-WARNING **: volume-control-pulse.vala:735: unable to get pulse unix socket: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.PulseAudio1 was not provided by any .service files

(indicator-keyboard-service:1940): IBUS-CRITICAL **: ibus_bus_call_sync: assertion 'ibus_bus_is_connected (bus)' failed
ubiquity-dm: start greeter
Gtk-Message: Failed to load module "overlay-scrollbar"

(panel:1929): Gdk-CRITICAL **: gdk_window_set_geometry_hints: assertion 'geometry != NULL || geom_mask == 0' failed

(process:1932): indicator-sound-WARNING **: accounts-service-access.vala:125: unable to find Accounts path for user null: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name com.canonical.UnityGreeter was not provided by any .service files
/usr/share/ibus-table/engine/main.py:27: PyGIWarning: IBus was imported without specifying a version first. Use gi.require_version('IBus', '1.0') before import to ensure that the right version gets loaded.
  from gi.repository import IBus

** (unity-settings-daemon:1870): CRITICAL **: setup_bg: assertion 'manager->priv->bg == NULL' failed

(unity-settings-daemon:1870): keyboard-plugin-WARNING **: Unhandled settings change, key 'bell-custom-file'

** (unity-settings-daemon:1870): CRITICAL **: setup_bg: assertion 'manager->priv->bg == NULL' failed

(unity-settings-daemon:1870): keyboard-plugin-WARNING **: Unhandled settings change, key 'bell-custom-file'