gnome-session[1815]: WARNING: Session 'ubuntu' runnable check failed: Exited with code 1
(metacity:1881): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(metacity:1881): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(metacity:1881): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(metacity:1881): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gnome-settings-daemon:1862): color-plugin-WARNING **: failed to get edid: unable to get EDID for output
(gnome-settings-daemon:1862): color-plugin-WARNING **: unable to get EDID for xrandr-default: unable to get EDID for output
(gnome-settings-daemon:1862): color-plugin-WARNING **: failed to reset xrandr-default gamma tables: gamma size is zero
(nvidia-settings:1920): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(nvidia-settings:1920): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(nvidia-settings:1920): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(nvidia-settings:1920): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gnome-control-center:2219): background-cc-panel-WARNING **: Could not load /usr/share/themes/Adwaita/index.theme: No such file or directory
(jockey-gtk:2278): Gtk-CRITICAL **: gtk_icon_set_render_icon_pixbuf: assertion `icon_set != NULL' failed
(jockey-gtk:2276): Gtk-CRITICAL **: gtk_icon_set_render_icon_pixbuf: assertion `icon_set != NULL' failed
(system-config-printer.py:2780): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(firefox:3018): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
(gnome-control-center:2219): color-cc-panel-WARNING **: MFC5895CW-RGB.. is not usable by this user
(gnome-control-center:2219): Gtk-CRITICAL **: gtk_builder_get_object: assertion `GTK_IS_BUILDER (builder)' failed
(gnome-control-center:2219): Gtk-CRITICAL **: gtk_tree_view_set_model: assertion `GTK_IS_TREE_VIEW (tree_view)' failed
(gnome-control-center:2219): Gtk-CRITICAL **: gtk_tree_view_get_selection: assertion `GTK_IS_TREE_VIEW (tree_view)' failed
(gnome-control-center:2219): Gtk-CRITICAL **: gtk_tree_selection_select_iter: assertion `GTK_IS_TREE_SELECTION (selection)' failed
(gnome-control-center:2219): color-cc-panel-WARNING **: failed to get profile: Failed to connect to missing profile /org/freedesktop/ColorManager/profiles/MFC5895CW_RGB__
(gnome-settings-daemon:1862): color-plugin-WARNING **: failed to connect to device: Failed to connect to missing device /org/freedesktop/ColorManager/devices/cups_MFC5895CW