When configuration of monitors changed, xfcsettingsd crashes.

xfsettingsd
(xfsettingsd:6823): libupower-glib-WARNING **: No 'CanSuspend' property

(xfsettingsd:6823): xfsettingsd-WARNING **: No available CRTC for LVDS1.

The program 'xfsettingsd' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadRRCrtc (invalid Crtc parameter)'.
  (Details: serial 2615 error_code 148 request_code 140 minor_code 21)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)


This happens when laptop wake up from multi-monitor configuration to configuration without external monitors (only laptop's builtin LVDS1).

This crash happens periodically.

Here launchpad bug for ubuntu: https://bugs.launchpad.net/ubuntu/+source/xfce4-settings/+bug/1379702