1. Install cron by running `apt-get install cron`
2. Add the following line to your crontab with `crontab -e`: "@reboot ~/fixscreen.sh"
3. Create the ~/fixscreen.sh file,and put the following therein:
xset -display :0 s off
xset -display :0 dpms 0 0 3600
5. Make the file executable by running `chmod +x ~/fixscreen.sh`
This may cause your screen to blank during a movie or other playback. I'm working on a patch to resolve this, and will post more information here.
I know some may wonder why this is worth doing, but my electricity bill can tell you why...I'm forgetful, and leave the TV on.