diff -Nurp gdm-3.38.2.1.orig/data/Xsession.in gdm-3.38.2.1/data/Xsession.in
--- gdm-3.38.2.1.orig/data/Xsession.in	1970-01-01 02:00:00.000000000 +0200
+++ gdm-3.38.2.1/data/Xsession.in	2021-01-08 16:32:13.435962298 +0200
@@ -181,13 +181,26 @@ if [ -d /usr/etc/X11/xinit/xinitrc.d ];
         fi
     done
 fi
-if [ -d /etc/X11/xinit/xinitrc.d ]; then
-    for i in /etc/X11/xinit/xinitrc.d/* ; do
-        if [ -x "$i" -a ! -d "$i" ]; then
-	    . "$i"
+
+# run scripts in /etc/X11/xinit.d and /etc/X11/xinit/xinitrc.d
+DESKTOP=${1##*/}
+SESSION=$DESKTOP
+for i in /etc/X11/xinit.d/* /etc/X11/xinit/xinitrc.d/* ; do
+    [ -d $i ] && continue
+    # Don't run ??foo.{rpmsave,rpmorig,rpmnew,~} scripts
+    [ "${i%.rpmsave}" != "${i}" ] && continue
+    [ "${i%.rpmorig}" != "${i}" ] && continue
+    [ "${i%.rpmnew}" != "${i}" ] && continue
+    [ "${i%\~}" != "${i}" ] && continue
+
+    if [ -x $i ]; then
+        if grep -q "# to be sourced" $i; then
+            . $i "${SESSION}"
+        else
+            $i "${SESSION}" &
         fi
-    done
-fi
+    fi
+done
 
 if [ "x$command" = "xdefault" ] ; then
   if [ -x "$HOME/.Xclients" ]; then