I've been studying up a little on the pmset command today, after being frustrated by the limits of the Energy Saver prefpane, and on looking at it's setting, I noticed it had an option called "gpuswitch". Seems like it should just be the switch between graphics cards......except it's value is "2". Every other parameter I can find for pmset that allows values other than 1 or 0 is something that is looking for a number of minutes, rather than a two-way switch. This obviously isn't a timer, so.....is it some sort of 3-way switch? Anybody know what this one does? The man page is no help, it apparently hasn't been updated for this, and my Google-fu got me nowhere. I guess I could just run "sudo pmset -a gpuswitch 1" and see what happens, but I'm a little loathe to sudo something if I'm not sure what will happen.