Comment 30 for bug 1259339

One simple work-around I found is to do the following:

1. Disable the check box to lock the screen before suspending in xfce-power-manager settings.
2. Enable "lock on suspend" in Light Locker settings

Now the screen is properly locked when resuming from suspend *and* screen power is restored after logging in.

Tested this on two Xubuntu 14.04 systems, seems to work.