Adding instructions for su only accessed users

slicerScripts/runSlicer.sh

@@ -2,6 +2,10 @@
 
 . `dirname $0`/env.sh
 
+#sometimes, particular for users only used through su, /run/user/XXXX is not created
+#to solve, run as sudoer
+#sudo loginctl enable-linger <USERNAME>
+
 export DISPLAY=:$DISPLAYID
 TEMP=~/.xpra/temp.log
 #make sure xpra is running a virtual buffer at DISPLAY