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

X.Org X Server 1.20.7
X Protocol Version 11, Revision 0
Build Operating System: Linux 4.4.0-173-generic x86_64 Ubuntu
Current Operating System: Linux xubuntu 5.4.0-18-generic #22-Ubuntu SMP Sat Mar 7 18:13:06 UTC 2020 x86_64
Kernel command line: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed only-ubiquity quiet splash ---
Build Date: 08 February 2020  11:21:37AM
xorg-server 2:1.20.7-2ubuntu2 (For technical support please see http://www.ubuntu.com/support) 
Current version of pixman: 0.38.4
	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 Mar 27 08:19:12 2020
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(II) modeset(0): Initializing kms color map for depth 24, 8 bpc.
ubiquity-dm: set vars
ubiquity-dm: pam_open_session
ubiquity-dm: dm-scripts
ubiquity-dm: start frontend gtk_ui
No such schema “org.gnome.settings-daemon.plugins.background”
No such schema “org.gnome.metacity”
ubiquity-dm: start greeter

(nm-applet:1800): Gtk-WARNING **: 08:19:14.862: Can't set a parent on widget which has a parent

(xfwm4:1797): GLib-CRITICAL **: 08:19:14.948: g_str_has_prefix: assertion 'prefix != NULL' failed

(xfsettingsd:1802): GLib-CRITICAL **: 08:19:15.115: g_str_has_prefix: assertion 'prefix != NULL' failed

(xfsettingsd:1802): GLib-GObject-CRITICAL **: 08:19:15.116: g_value_get_string: assertion 'G_VALUE_HOLDS_STRING (value)' failed

(xfsettingsd:1802): GLib-GObject-CRITICAL **: 08:19:15.124: g_value_get_string: assertion 'G_VALUE_HOLDS_STRING (value)' failed

(nm-applet:1800): Gtk-CRITICAL **: 08:19:17.449: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed

(nm-applet:1800): Gtk-CRITICAL **: 08:19:19.659: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed

(nm-applet:1800): Gtk-WARNING **: 08:19:19.660: Can't set a parent on widget which has a parent

(nm-applet:1800): libnotify-WARNING **: 15:19:48.058: Failed to connect to proxy

(nm-applet:1800): nm-applet-WARNING **: 15:20:13.084: Failed to show notification: Error calling StartServiceByName for org.freedesktop.Notifications: Timeout was reached

(nm-applet:1800): Gtk-CRITICAL **: 15:20:13.090: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed

(nm-applet:1800): Gtk-CRITICAL **: 15:20:13.090: gtk_widget_destroy: assertion 'GTK_IS_WIDGET (widget)' failed

(nm-applet:1800): Gtk-WARNING **: 15:20:13.091: Can't set a parent on widget which has a parent