Blank Screen 11.2 + gnome

I recently upgraded from 11.0 to 11.2 milestone 1. Anytime I leave my gnome session idle for more than 10 seconds or so, my monitor loses signal. This will not happen if I am watching a full screen movie. The screen is not disabling due to power saving settings or screensavers, and there are no errors in any logs during the signal loss. Moving my mouse will bring signal back.

Any ideas?