Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
How To Make The iPad's Smart Cover Even Smarter
Kickstarter has brought us many great products and projects in the past but the latest project to hit the shelves is that of the Smarter Stand for iPad. The Smarter Stand for iPad is an accessory for the iPads Smart Case. You can back the project here and for $11 or more you could get your self a great product.