--- /etc/init.d/._cfg0000_xdm   2017-04-01 12:07:28.000000000 +0300
+++ /etc/init.d/xdm     2017-07-16 11:51:05.550338041 +0300
@@ -113,7 +113,7 @@
                *)
                        # first find out if there is such executable
                        EXE="$(command -v ${MY_XDM} 2>/dev/null)"
-                       PIDFILE="/run/${MY_XDM}.pid"
+                       PIDFILE="/run/${MY_XDM##*/}.pid"

                        # warn user that he is doing sick things if the exe was not found
                        if [ -z "${EXE}" ]; then