My MacBook Pro is connected to a secondary display. I use the computer in clamshell mode, meaning that I must use the wireless keyboard or Magic Mouse to wake the computer. In Lion, closing the lid automatically makes the secondary display primary. But this doesn't seem to be the same on Mountain Lion, as doing so sleeps the computer immediately. If I put my computer to sleep using Apple > Sleep, the computer will not respond to any of my clicks, on both the keyboard and the mouse. I must open the lid to wake it. Does anyone have the same issue and have a workaround? Thanks.