OMG. I didn't know about cmd-f1 until I searched for this. SwitchresX put my displays in mirror mode before it started crashing hopelessly, and since there's apparently no gui for entering or leaving the mode in ML, I was completely stuck. Thanks!
I really hope Apple improves the Display prefpane. Want more control!
EDIT: any tricks for putting an external display into HiDPI mode? That was there in Lion but gone in Lion.
OMG. I didn't know about cmd-f1 until I searched for this. SwitchresX put my displays in mirror mode before it started crashing hopelessly, and since there's apparently no gui for entering or leaving the mode in ML, I was completely stuck. Thanks!
In Snow Leopard I enjoyed having the screen resolution options available to me in the menu bar on my iMac. That option seems to have vanished when I upgraded to Mountain Lion.
I tried the Cmd+F1 keyboard shortcut that someone suggested, but nothing happened. Then I tried Option+F1 and that worked nicely to bring up the display settings window in the system preferences.
It requires a bit of scrolling to find the right resolution, but I'm fine with that.