Description of problem: Just upgraded my system with the latest updates and found that 'su - joeuser' from root leaves the XAUTHORITY variable set to /root/.Xauthority. So commands like: xauth extract - $DISPLAY | su -l --command="unset XAUTHORITY ; xauth merge -" joeuser need to explicitly unset XAUTHORITY Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info: