Comment 5 for bug 1168838

Out of curiosity, why was idle-dim-time dropped, aside from it producing the bug listed above? I'm wondering because idle-dim-time is a great power saving feature that allows the screen to dim when the computer is not in use for a given time, but it is not the same as the sleep-mode timeout or the monitor powerdown timeout (idle-timeout under com.canonical.unity.greeter or idle-delay under org.gnome.desktop.session).

Here's what I'm trying to accomplish while on battery, and please tell me if there's a setting in 14.10 that does this:

After 30 seconds of inactivity the screen dims to 30%. Any mouse movement activates the screen again.
After 5 minutes of inactivity the screen shuts down and locks the desktop (currently controlled by idle-delay)
After 30 minutes the computer goes to sleep

Is there anything that does this in Ubuntu 14.10, or should I create a feature request to get this added back in?