Power Manager crashes in XDMCP sessions

Submitted by Dirk Hagedorn

Link to original bug (#14141)

Description

Running a Xubuntu 16.04 on my laptop works fine as long as I start a session via XDMCP from a Windows computer (using VcXsrv). Then I don't see any xfce power applet with the current battery status. Reason: no xfce4-power-manager running

If I try to start it manually with "xfce4-power-manager --debug" I get...

$ xfce4-power-manager --debug
TRACE[xfpm-main.c:192] xfpm_start(): Starting the power manager
Xlib:  extension "DPMS" missing on display "192.168.23.177:42.0".
...
TRACE[xfpm-battery.c:240] xfpm_battery_refresh_icon(): Battery icon xfpm-primary-040
(xfce4-power-manager:7056): GLib-GObject-CRITICAL **: g_object_get: assertion 'G_IS_OBJECT (object)' failed
Xlib:  extension "DPMS" missing on display "192.1.1.177:42.0".
(xfce4-power-manager:7056): xfce4-power-manager-WARNING **: Cannot get DPMSInfo
(xfce4-power-manager:7056): GLib-GObject-CRITICAL **: g_object_get: assertion 'G_IS_OBJECT (object)' failed
(xfce4-power-manager:7056): GLib-GObject-CRITICAL **: g_object_get: assertion 'G_IS_OBJECT (object)' failed
Speicherzugriffsfehler

(= memory access error)

Version: 1.4.x