How to engage clamshell mode
QIt’s easy to use my MacBook Pro with an external display, keyboard and mouse when it’s open. How can I do that when it’s closed, in ‘clamshell’ mode? Do I need a dock?
AYou don’t need a dock to use your MacBook Pro in clamshell mode, and sometimes using one complicates matters because of compatibility issues – go for docks from vendors specialising in Mac products who ensure they work properly. To save ports and for flexibility, use a wireless keyboard and mouse, such as those made by Apple. The only port you’ll need to use is for the external display.
The sequence which should work in clamshell mode involves first connecting the mains charging lead, then ensuring your mouse and keyboard are properly connected. Connect your external display, powering it on so that you see your Mac’s Desktop on it. Use the Displays pane to adjust its settings at this stage, and close the MacBook Pro. If the display then goes to sleep, just press a key or click the mouse to wake the display again.