Comment 2 for bug 1439427

StacktraceTop:
 XGetDeviceProperty (dpy=0x17eab70, dev=0x0, property=271, offset=0, length=4, delete=0, req_type=0, actual_type=0x7ffdaf2c3408, actual_format=0x7ffdaf2c3404, nitems=0x7ffdaf2c3410, bytes_after=0x7ffdaf2c3418, prop=0x7ffdaf2c3420) at ../../src/XGetDProp.c:64
 device_set_property (xdevice=0x0, device_name=0x1c51280 "Wacom Bamboo 2FG 4x5 Pen stylus", property=0x7ffdaf2c34a0) at gsd-input-helper.c:64
 wacom_set_property (device=device@entry=0x1c4b410, property=property@entry=0x7ffdaf2c34a0) at gsd-wacom-manager.c:170
 set_area (device=device@entry=0x1c4b410, value=0x7fc0f01e2330) at gsd-wacom-manager.c:235
 wacom_settings_changed (settings=0x1a03a60, key=0x19d553a "area", device=0x1c4b410) at gsd-wacom-manager.c:796