Nexus 10 stuck in sleep!!

[Brightlite]

I have a Nexus 10 16GB (if that matters) that is rooted and running CM 10.1.1 and Franco Kernel #12. Now I've only had this for about 3 months and I rooted, running PA Halo, immediately after I purchased it. Now the problem is when I use my Nexus 10 then manually lock or auto-lock it, then decided to wake it up, usually 30 mins - 1 hour later, it stays in sleep mode. The screen doesn't turn or flash or anything. Now the crazy thing is that even though the screen won't turn on, the LED will still flash/blink like normally. What I have to do to wake it up is hard reset it, which is annoying and an inconvenience. I can't recall when this behavior started but recently, more this month, it has been happening all the time, when before it would occasionally.

Methods I've tried to fix it with:
- Disabling Adblock
- Uninstalling Adblock
- Uninstalling Juice Defeneder
- Uninstalling Greenify
- Switched "Security>Screen Lock from None to Slide" (worked temporarily)
- Updated CM from 10.1.0 to 10.1.1
- Running stock Kernel