Hello Linux Geeksters. As you may know, Canonical has decided to replace the X.org Server with Mir, their own display server on Ubuntu 13.10 Saucy Salamander.
They are working hard, in order to get Mir ready until October, when Ubuntu Saucy will be released. Among other improvements, the Canonical developers have added Display Power Management Signaling (DPMS) support for Mir, in order to allow monitors to enter in their sleep state.
Now, the users can easily set their monitors to sleep after a time of system idle, via the DPMS improvement.
To install Mir / update Mir to the latest version available, on one of the Ubuntu 13.10 Saucy Salamander daily build images, do this:
$ sudo add-apt-repository ppa:mir-team/staging
$ sudo apt-get update
$ sudo apt-get install mir unity-system-compositor