I have a 2012 Mac Mini hooked up via HDMI to my receiver and then my 52" Samsung LCD. Everything is working great except when I return to the computer after it has been sleeping a couple hours or more, my windows are resized and Mission Control is glitched. For example, once I wake from sleep, my Finder window is the same size horizontally, but it has shrunken vertically to a very narrow field of view. Likewise, my Chrome window is the same across but it is no longer sized all the way down to the dock like I had it before it slept. More annoyingly, if I do the 3-finger swipe up to see my desktops in Mission Control, it is glitched. Not sure how to explain it, but my wallpaper is small and most of the desktops I have in separate windows do not show up. I can go to the terminal and type "killall -kill dock" and that will restart the dock and mission control. Then it works fine again. Anyone know what is going on and why it only does it after waking from sleep? I wasn't sure if this is a generic OSX question or if it had something to do specifically with the Mini or my connection via HDMI. Thanks!