Index: xinit-1.3.1/startx.cpp
===================================================================
--- xinit-1.3.1.orig/startx.cpp
+++ xinit-1.3.1/startx.cpp
@@ -11,6 +11,7 @@ XCOMM
 XCOMM Site administrators are STRONGLY urged to write nicer versions.
 XCOMM
 
+unset XDG_SESSION_COOKIE
 unset DBUS_SESSION_BUS_ADDRESS
 unset SESSION_MANAGER