I did not want my screen to go blank, so I switched every setting XFCE offered (turned off screensavers, changed that power management setting) to fit that need. However, my screen would still decide to go blank after 10-15 minutes of inactivity. Apparently the problem comes from X and the fix is easy enough. Simply run the following commands.

xset -dpms
xset s noblank
xset s off

This is only a temporary fix and will stop working once you reboot. It can be made permanent by digging in your Xorg configuration files… and what not. I felt too lazy for that, I find those particular files slightly messy. So I simply put those previous commands in a little bash script and have that script run at startup. All problems solved without breaking a sweat.

I mention this problem in XFCE, but it can happen in pretty much any setup that uses X, I believe. I had it occur in i3 and fixed it with the same commands.