$ xfce4-power-manager --version

Xfce Power Manager 1.4.4git-6edeb70

Part of the Xfce Goodies Project
http://goodies.xfce.org

Licensed under the GNU GPL.

~~~~~~~~~~~~~~~~~~~~~~~~~~~

$ xfconf-query -c xfce4-power-manager -p /xfce4-power-manager/show-tray-icon
true

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

$ xfce4-power-manager --debug

(xfce4-power-manager:23454): GLib-CRITICAL **: g_variant_unref: assertion 'value != NULL' failed

** (xfce4-power-manager:23454): 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:23454): GLib-CRITICAL **: g_variant_unref: assertion 'value != NULL' failed

** (xfce4-power-manager:23454): 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 inactivity-on-ac
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-ac
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
TRACE[xfpm-xfconf.c:164] xfpm_xfconf_load(): Using default configuration for logind-handle-lid-switch

(xfce4-power-manager:23454): GLib-GObject-WARNING **: gsignal.c:2461: signal 'Changed' is invalid for instance '0x1918cf0' of type 'GDBusProxy'
TRACE[xfpm-polkit.c:287] xfpm_polkit_init_data(): Using unix session polkit subject

(xfce4-power-manager:23454): GLib-CRITICAL **: g_variant_new_string: assertion 'string != NULL' failed
TRACE[xfpm-polkit.c:364] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.power-off is authorized=TRUE

(xfce4-power-manager:23454): GLib-CRITICAL **: g_variant_new_string: assertion 'string != NULL' failed
TRACE[xfpm-polkit.c:364] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.reboot is authorized=TRUE

(xfce4-power-manager:23454): GLib-CRITICAL **: g_variant_new_string: assertion 'string != NULL' failed
TRACE[xfpm-polkit.c:364] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.suspend is authorized=TRUE

(xfce4-power-manager:23454): GLib-CRITICAL **: g_variant_new_string: assertion 'string != NULL' failed
TRACE[xfpm-polkit.c:364] 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

(xfce4-power-manager:23454): GLib-CRITICAL **: g_variant_new_string: assertion 'string != NULL' failed
TRACE[xfpm-polkit.c:364] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.suspend is authorized=TRUE

(xfce4-power-manager:23454): GLib-CRITICAL **: g_variant_new_string: assertion 'string != NULL' failed
TRACE[xfpm-polkit.c:364] xfpm_polkit_check_auth_intern(): Action=org.freedesktop.login1.hibernate is authorized=TRUE
TRACE[xfpm-power.c:1512] xfpm_power_dbus_init(): entering
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:23454): 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:23454): xfce4-power-manager-WARNING **: Unable to inhibit systemd sleep: Method 'Inhibit' returned type '(h)', but expected '()'
TRACE[xfpm-manager.c:533] xfpm_manager_set_idle_alarm_on_ac(): setting inactivity sleep timeout on ac to never
TRACE[xfpm-manager.c:559] xfpm_manager_set_idle_alarm_on_battery(): setting inactivity sleep timeout on battery to never

** (xfce4-power-manager:23454): WARNING **: No outputs have backlight property

(xfce4-power-manager:23454): GLib-CRITICAL **: g_variant_unref: assertion 'value != NULL' failed

(xfce4-power-manager:23454): 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


** (xfce4-power-manager:23454): WARNING **: No outputs have backlight property
DBG[../panel-plugins/power-manager-plugin/power-manager-button.c:692] set_brightness_min_level(): button->priv->brightness_min_level : 0
TRACE[xfpm-manager.c:747] xfpm_manager_show_tray_icon(): Showing tray icon
TRACE[../panel-plugins/power-manager-plugin/power-manager-button.c:144] get_display_device(): entering
TRACE[../panel-plugins/power-manager-plugin/power-manager-button.c:193] power_manager_button_set_tooltip(): entering
TRACE[../panel-plugins/power-manager-plugin/power-manager-button.c:451] power_manager_button_add_device(): entering for /org/freedesktop/UPower/devices/DisplayDevice
TRACE[../panel-plugins/power-manager-plugin/power-manager-button.c:232] find_device_in_list(): entering
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[../panel-plugins/power-manager-plugin/power-manager-button.c:232] find_device_in_list(): entering

(xfce4-power-manager:23454): GLib-ERROR **: gmem.c:103: failed to allocate 18446744073681245697 bytes
Trace/breakpoint trap