Technical help question
Okay, Apple nerds: for years I had a MacBook Pro and used either its internal display or an external monitor with the MBP’s lid closed. If I put the MBP to sleep, I could connect the external display and USB keyboard, press a button on the keyboard, and it would wake up, with the internal monitor off. That’s pretty much what I wanted. (I’ve never had any desire to run the MBP with the lid open and the internal monitor off.)
Over the last six months or so I’ve been using a new, Lion-only 13” MacBook Air. I love it, mostly, but it exhibits an infuriating quirk with respect to this: I can’t make it shut off the damn internal display. Ever.
When I do what I described in the first paragraph, the Air will turn on both displays. If I open the lid and close it, then the internal display will go off—but Lion will still think both displays are active, so the mouse pointer will zip off into an imaginary display if it goes off the side of the big monitor. Running “Detect Displays” in Display Preferences doesn’t help—it still finds both monitors.
So: is this a weird problem with this Air, or is this the same experience other Lion/Air users have with this? And more importantly, is there a way to get the older behavior I described back?