$ xfce4-power-manager --debug --dump

** (xfce4-power-manager:21870): WARNING **: Failed to get name owner: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name 'org.xfce.PowerManager': no such name


** (xfce4-power-manager:21870): WARNING **: Failed to get name owner: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name 'org.freedesktop.PowerManagement': no such name


** (xfce4-power-manager:21870): WARNING **: Failed to get name owner: GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Could not get owner of name 'org.xfce.PowerManager': no such name

TRACE[xfpm-main.c:205] xfpm_start(): Starting the power manager
TRACE[xfpm-xfconf.c:631] xfpm_xfconf_init(): lock screen TRUE
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for critical-power-level
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for show-brightness-popup
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for handle-brightness-keys
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for critical-power-action
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for lid-action-on-ac
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for lid-action-on-battery
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for brightness-level-on-ac
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for brightness-level-on-battery
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for brightness-slider-min-level
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for dpms-on-battery-sleep
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for dpms-on-battery-off
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for dpms-sleep-mode
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for inactivity-on-battery
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for inactivity-sleep-mode-on-battery
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for brightness-on-ac
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for brightness-on-battery
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for network-manager-sleep
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for logind-handle-power-key
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for logind-handle-suspend-key
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for logind-handle-hibernate-key

(xfce4-power-manager:21870): GLib-GObject-WARNING **: gsignal.c:2461: signal 'Changed' is invalid for instance '0x2554cf0' of type 'GDBusProxy'
TRACE[xfpm-polkit.c:287] xfpm_polkit_init_data(): Using unix session polkit subject
TRACE[xfpm-polkit.c:345] xfpm_polkit_check_auth_intern(): polkit request: (('unix-process', {'pid': <uint32 21870>, 'start-time': <uint64 159066>}), 'org.freedesktop.login1.power-off', @a{ss} {}, uint32 0, '')
TRACE[xfpm-polkit.c:366] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.power-off is authorized=TRUE
TRACE[xfpm-polkit.c:345] xfpm_polkit_check_auth_intern(): polkit request: (('unix-process', {'pid': <uint32 21870>, 'start-time': <uint64 159066>}), 'org.freedesktop.login1.reboot', @a{ss} {}, uint32 0, '')
TRACE[xfpm-polkit.c:366] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.reboot is authorized=TRUE
TRACE[xfpm-polkit.c:345] xfpm_polkit_check_auth_intern(): polkit request: (('unix-process', {'pid': <uint32 21870>, 'start-time': <uint64 159066>}), 'org.freedesktop.login1.suspend', @a{ss} {}, uint32 0, '')
TRACE[xfpm-polkit.c:366] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.suspend is authorized=TRUE
TRACE[xfpm-polkit.c:345] xfpm_polkit_check_auth_intern(): polkit request: (('unix-process', {'pid': <uint32 21870>, 'start-time': <uint64 159066>}), 'org.freedesktop.login1.hibernate', @a{ss} {}, uint32 0, '')
TRACE[xfpm-polkit.c:366] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.hibernate is authorized=TRUE
TRACE[xfpm-power.c:210] xfpm_power_check_polkit_auth(): using logind suspend backend
TRACE[xfpm-polkit.c:345] xfpm_polkit_check_auth_intern(): polkit request: (('unix-process', {'pid': <uint32 21870>, 'start-time': <uint64 159066>}), 'org.freedesktop.login1.suspend', @a{ss} {}, uint32 0, '')
TRACE[xfpm-polkit.c:366] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.suspend is authorized=TRUE
TRACE[xfpm-polkit.c:345] xfpm_polkit_check_auth_intern(): polkit request: (('unix-process', {'pid': <uint32 21870>, 'start-time': <uint64 159066>}), 'org.freedesktop.login1.hibernate', @a{ss} {}, uint32 0, '')
TRACE[xfpm-polkit.c:366] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.hibernate is authorized=TRUE
TRACE[xfpm-power.c:1412] xfpm_update_blank_time(): Timeout: 10
TRACE[xfpm-power.c:1412] xfpm_update_blank_time(): Timeout: 10
TRACE[xfpm-power.c:1412] xfpm_update_blank_time(): Timeout: 0
TRACE[xfpm-button.c:183] xfpm_button_xevent_key(): Grabbed key 124 : ((XfpmButtonKey) BUTTON_POWER_OFF)

(xfce4-power-manager:21870): xfce4-power-manager-WARNING **: could not map keysym 1008ffa8 to keycode

TRACE[xfpm-button.c:183] xfpm_button_xevent_key(): Grabbed key 213 : ((XfpmButtonKey) BUTTON_HIBERNATE)
TRACE[xfpm-button.c:183] xfpm_button_xevent_key(): Grabbed key 150 : ((XfpmButtonKey) BUTTON_SLEEP)
TRACE[xfpm-button.c:183] xfpm_button_xevent_key(): Grabbed key 233 : ((XfpmButtonKey) BUTTON_MON_BRIGHTNESS_UP)
TRACE[xfpm-button.c:183] xfpm_button_xevent_key(): Grabbed key 232 : ((XfpmButtonKey) BUTTON_MON_BRIGHTNESS_DOWN)
TRACE[xfpm-button.c:183] xfpm_button_xevent_key(): Grabbed key 244 : ((XfpmButtonKey) BUTTON_BATTERY)
TRACE[xfpm-button.c:183] xfpm_button_xevent_key(): Grabbed key 238 : ((XfpmButtonKey) BUTTON_KBD_BRIGHTNESS_UP)
TRACE[xfpm-button.c:183] xfpm_button_xevent_key(): Grabbed key 237 : ((XfpmButtonKey) BUTTON_KBD_BRIGHTNESS_DOWN)
TRACE[xfpm-manager.c:643] xfpm_manager_inhibit_sleep_systemd(): Inhibiting systemd sleep: handle-power-key:handle-suspend-key:handle-hibernate-key:handle-lid-switch

(xfce4-power-manager:21870): GLib-CRITICAL **: g_error_free: assertion 'error != NULL' failed

** (xfce4-power-manager:21870): WARNING **: No outputs have backlight property

(xfce4-power-manager:21870): xfce4-power-manager-WARNING **: Failed to get keyboard max brightness level : GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Method "GetMaxBrightness" with signature "" on interface "org.freedesktop.UPower.KbdBacklight" doesn't exist

---------------------------------------------------
       Xfce power manager version 1.4.4git-20150411
With policykit support
With network manager support
---------------------------------------------------
Can suspend: True
Can hibernate: True
Authorized to suspend: True
Authorized to hibernate: True
Authorized to shutdown: True
Has battery: False
Has brightness panel: False
Has power button: True
Has hibernate button: True
Has sleep button: True
Has LID: False
TRACE[xfpm-xfconf.c:202] xfpm_xfconf_property_changed_cb(): Property modified: /xfce4-power-manager/show-tray-icon


** (xfce4-power-manager:21870): WARNING **: No outputs have backlight property
TRACE[xfpm-manager.c:747] xfpm_manager_show_tray_icon(): Showing tray icon
TRACE[../panel-plugins/power-manager-plugin/power-manager-button.c:460] power_manager_button_add_device(): entering for /org/freedesktop/UPower/devices/DisplayDevice
TRACE[../panel-plugins/power-manager-plugin/power-manager-button.c:367] power_manager_button_update_device_icon_and_details(): entering for /org/freedesktop/UPower/devices/DisplayDevice
TRACE[xfpm-power-common.c:190] get_device_icon_name(): icon_suffix (null), icon_base_length 2147483647, upower_icon 
TRACE[xfpm-manager.c:721] xfpm_manager_tray_update_icon(): updating icon
TRACE[xfpm-manager.c:705] xfpm_manager_tray_update_tooltip(): updating tooltip
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
TRACE[xfpm-xfconf.c:202] xfpm_xfconf_property_changed_cb(): Property modified: /xfce4-power-manager/show-tray-icon


(xfce4-power-manager:21870): Gtk-WARNING **: A floating object was finalized. This means that someone
called g_object_unref() on an object that had only a floating
reference; the initial floating reference is not owned by anyone
and must be removed with g_object_ref_sink().
TRACE[xfpm-xfconf.c:202] xfpm_xfconf_property_changed_cb(): Property modified: /xfce4-power-manager/show-tray-icon


** (xfce4-power-manager:21870): WARNING **: No outputs have backlight property
TRACE[xfpm-manager.c:747] xfpm_manager_show_tray_icon(): Showing tray icon
TRACE[../panel-plugins/power-manager-plugin/power-manager-button.c:460] power_manager_button_add_device(): entering for /org/freedesktop/UPower/devices/DisplayDevice
TRACE[../panel-plugins/power-manager-plugin/power-manager-button.c:367] power_manager_button_update_device_icon_and_details(): entering for /org/freedesktop/UPower/devices/DisplayDevice
TRACE[xfpm-power-common.c:190] get_device_icon_name(): icon_suffix (null), icon_base_length 2147483647, upower_icon 
TRACE[xfpm-manager.c:721] xfpm_manager_tray_update_icon(): updating icon
TRACE[xfpm-manager.c:705] xfpm_manager_tray_update_tooltip(): updating tooltip
^CTRACE[xfpm-main.c:68] xfpm_quit_signal(): sig 2
TRACE[xfpm-manager.c:936] xfpm_manager_stop(): Stopping
TRACE[xfpm-manager.c:264] xfpm_manager_quit(): Exiting
TRACE[xfpm-polkit.c:244] xfpm_polkit_free_data(): Destroying Polkit data