I have a MacBook Pro, late 2010 model, with a display-port out that I use with the DP->DVI adapter to drive a Dell monitor as my secondary. I run Mac OSX Lion 10.7.3.
The secondary monitor is positioned above my laptop screen, so I've arranged it like that in display preferences.
When I have the secondary monitor plugged in (and powered on), quite often (but not every time!) the MBP will not sleep when I shut its lid.
When I open the MBP again, quite often (but again, not every time) the MBP's monitor will not be detected, and the secondary monitor will be where the lock-screen prompt is. The secondary monitor will also be running at a lower resolution than it's capable of.
I will then need to open display preferences, and then detect-displays before both screens are back to normal - and then rearrange all the windows that have shrunk down.
This is getting dull.
This seems to have been getting more prevalent with Lion vs Snow Leopard.
How can I get the MBP to remember that its primary monitor is always the laptop screen? I'm at a loss to know how it can forget about that one, really.
I did install some software called Display Maid after googling for solutions to this sort of problem, but I haven't been able to make that improve this problem - it's supposed to restore windows to the positions that they were in when it noticed a certain display configuration, but I haven't been able to get that to make a positive difference. Display Maid isn't the problem, though; it was evident before I installed it.
Additionally, how can I get the MBP to remember the resolution of the attached, not-changing monitor?