When I was using Fedora, one of the more bizarre issues that started cropping up is that when -- and only when -- it was left unattended for several hours, my external/only monitor would shut off and refuse to come back on for several minutes. The power light would flicker for about two seconds when I asked it to turn on, and my sharp (likely autistic-linked) ears could hear all kinds of weird (and now predictable) electrical fluctuations, but no picture. Turning the screensaver off, turning it on, changing it, etc. didn't help.
I switched back to OpenSuSE, left it overnight, and to my shock, the monitor was still on the next morning. I figured that I'd just solved the problem, saving me the very real possibility of having a dead monitor, especially since I can't afford a new one and don't know how to fix it yet. That is, until today, when I found the monitor in "sleep" state and it shut itself off for several minutes when I moved the mouse to bring it back up. This is really frustrating -- there's a ton of non-optional expenses in the next few months (and I don't mean presents), and this was the second Westinghouse to pull this on me in a row. Bleep Westinghouse.
Time to do some serious research on fixing LCD monitor power issues, I guess. Well, I had planned on learning how to fix electronics via soldering iron sometime, and I'll be thrilled for a week if I pull it off!!