X server auditing logs

To enable the log for the X Server auditing logs

root>> vi /etc/inittab

Add the -audit option to the X Server startup

>> x:5:respawn:/usr/X11R6/bin/X -audit 2 -noreset -nolisten inet6 -ac +bs :0

Xserver Log  location (/var/log) for e.g. if you are using XOrg then it would be:
/var/log/Xorg.0.log