Control, but I have Caps Lock and my right control key swapped, so physically the Caps Lock key.
It also doesn’t really “wake” my computer. When I lock my desktop, I have the operation also set up to enable DPMS with a short timeout, so my monitor also powers down if I’m not typing for a few seconds. When I come back, I just smack Control to make the monitor power on and make my screen locker show an indication that it’s active. Unlocking the screen locker disables DPMS, so once the system’s unlocked, I don’t need to tap anything to wake the monitor.
Control, but I have Caps Lock and my right control key swapped, so physically the Caps Lock key.
It also doesn’t really “wake” my computer. When I lock my desktop, I have the operation also set up to enable DPMS with a short timeout, so my monitor also powers down if I’m not typing for a few seconds. When I come back, I just smack Control to make the monitor power on and make my screen locker show an indication that it’s active. Unlocking the screen locker disables DPMS, so once the system’s unlocked, I don’t need to tap anything to wake the monitor.