Suspend has been removed since its notoriously unreliable , it was removed in ubuntu as well, if you would like to suspend can choose a graphical way or command way. An easy graphical way is to install qshutdown, command way is as follows  http://askubuntu.com/questions/120967/what-is-the-user-level-command-to-suspend/120976#120976

Also keep in mind that tlp was installed for automatic power management and xscreensaver is used to lock the screen

Also just in case you missed it, 'Lock' is available on the log out screen, coupled with your xscreensaver preferences and tlp should be adequate.

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I have tired this
with no luck. I can get the system to suspend using qshutdown but it
will not require the user password when coming back out of suspend.
I have looked at the settings in xscreensaver and can get it to lock
and require the password after blanking the screen but I cannot get
them to work together. Any help would be appreciated....thanks

I don't see Sleep as a option in either program.

Got it working...thanks for all the help.