Initial delay in typing

I've noticed after I come back to my newly installed Fedora 20 system, there's a delay in typing. For example, if I have a terminal window open, and I leave it alone for a few minutes and return, when I type, it takes multiple seconds for my typing to manifest. It's fine after that, provided I don't wait too long between typing. This happens for any typing, not just the terminal. It could be the password on the lock screen, terminal sessions, web forms in FireFox, etc. My system has 32G of RAM, and it occurs with nothing active, except for a terminal or webpage, nothing significantly taxing. The keyboard is the build in laptop physical keyboard. The laptop is a Dell Inspiron 17R (17RM-16452sLV). Is there a known reason this occurs? How can I diagnose and fix the cause of the issue?