First time trying the 12.11 beta drivers. Something definitely weird is going on here.
When my monitor goes to sleep, my 7870's fans intermittently spin up to full speed for a split second, and then spin back down. Over and over. Like there's this pulsing whhiirrr noise that fades in and out every few seconds.
When I move my mouse and wake the monitor back up, it goes away.
Also, the monitor sleeping itself has some odd issues. Sometimes, rather than stopping the video signal completely, the card just displays a full-black image. And just a few minutes ago, it went to sleep normally, but then the monitor randomly came back on by itself and the video card displayed just a black image. When I moved the mouse, it went back to normal again.
Kinda disturbing. I'm reverting back to 12.10 for now.