I ran dbus-monitor and logged its output. I then ran totem and instructed it to go full screen, then normal, then back and forth.
** Attachment added: "dbus-monitor output" http://librarian.launchpad.net/7031752/dbus-monitor.out -- screen turns off after 20 minutes even when playing in fullscreen https://launchpad.net/bugs/97251 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs