xfce4-panel(main): version 4.12.0git-20150320 on gtk+ 2.24.27 (2.24.27), glib 2.42.2 (2.42.2)
xfce4-panel(main): running external plugins with /usr/bin/gdb, logs stored in /tmp
xfce4-panel(module-factory): reading /usr/share/xfce4/panel/plugins
...
xfce4-panel(external): register dbus path /org/xfce/Panel/Wrapper/19
xfce4-panel(module): new item (type=external-wrapper, name=power-manager-plugin, id=19)
xfce4-panel(external): power-manager-plugin-19: child spawned; pid=22151, argc=25
xfce4-panel(application): saving /panels/panel-1: ids=true, providers=false
xfce4-panel(external): power-manager-plugin-19: child is embedded; 6 properties in queue

** (wrapper-2.0:22153): WARNING **: No outputs have backlight property
xfce4-panel(struts): 0x10e40a0: top=39, start_x=0, end_x=1919
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
xfce4-panel(external): power-manager-plugin-19: plugin unrealized; quiting child
xfce4-panel(application): saving /panels/panel-1: ids=true, providers=false
^Cxfce4-panel(main): received signal Interrupt <2>, quitting panel
...
xfce4-panel(application): saving /panels/panel-1: ids=false, providers=true
xfce4-panel(external): actions-2: plugin unrealized; quiting child
xfce4-panel(application): finalized


/tmp/1429116978_gdb_power-manager-plugin_19.log

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7fffe49ff700 (LWP 22157)]
Detaching after fork from child process 22158.
Detaching after fork from child process 22160.
[Thread 0x7ffff7f9a980 (LWP 22153) exited]
[Inferior 1 (process 22153) exited normally]
No stack.
The program has no registers now.