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

X.Org X Server 1.17.3
Release Date: 2015-10-26
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.13.0-77-generic x86_64 Ubuntu
Current Operating System: Linux xubuntu 4.4.0-8-generic #23-Ubuntu SMP Wed Feb 24 20:45:30 UTC 2016 x86_64
Kernel command line: initrd=/casper/initrd.lz file=/cdrom/preseed/xubuntu.seed boot=casper only-ubiquity  quiet splash --- BOOT_IMAGE=/casper/vmlinuz.efi 
Build Date: 16 February 2016  05:42:38PM
xorg-server 2:1.17.3-2ubuntu4 (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: Wed Mar  2 21:01:35 2016
(==) 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
No such schema 'org.gnome.settings-daemon.plugins.background'
No such schema 'org.gnome.metacity'

** (process:1395): WARNING **: Failed to register client: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
ubiquity-dm: start greeter

(process:1406): indicator-sound-WARNING **: volume-control-pulse.vala:713: unable to get pulse unix socket: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.PulseAudio1 was not provided by any .service files
Gtk-Message: Failed to load module "overlay-scrollbar"
Gtk-Message: Failed to load module "gail"
Gtk-Message: Failed to load module "overlay-scrollbar"
Gtk-Message: Failed to load module "gail"
initctl: UPSTART_SESSION isn't set in the environment. Unable to locate the Upstart instance.
Gtk-Message: Failed to load module "overlay-scrollbar"
Gtk-Message: Failed to load module "overlay-scrollbar"
Activating service name='org.a11y.atspi.Registry'
Successfully activated service 'org.a11y.atspi.Registry'

(xfsettingsd:1433): GLib-CRITICAL **: g_str_has_prefix: assertion 'prefix != NULL' failed

(xfsettingsd:1433): GLib-GObject-CRITICAL **: g_value_get_string: assertion 'G_VALUE_HOLDS_STRING (value)' failed

(xfsettingsd:1433): GLib-GObject-CRITICAL **: g_value_get_string: assertion 'G_VALUE_HOLDS_STRING (value)' failed

(panel:1404): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2149:29: Expected a valid selector

(nm-applet:1407): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2149:29: Expected a valid selector

(panel:1404): Gdk-CRITICAL **: gdk_window_set_geometry_hints: assertion 'geometry != NULL || geom_mask == 0' failed

(process:1406): indicator-sound-WARNING **: volume-control-pulse.vala:807: 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

(xfwm4:1396): GLib-CRITICAL **: g_str_has_prefix: assertion 'prefix != NULL' failed
ubiquity-dm: greeter exited with code 1
No such schema 'org.gnome.settings-daemon.plugins.background'
No such schema 'org.gnome.metacity'
nm-applet-Message: PID 1196 (we are 1407) sent signal 15, shutting down...

(nm-applet:1407): GLib-CRITICAL **: Source ID 129 was not found when attempting to remove it
xfsettingsd: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.
(II) Server terminated successfully (0). Closing log file.
ubiquity-dm: Exiting with code 1