Pressed the power button again, and its fans started, but nothing more happened. I figured it had somehow crashed, so I pressed the power button for a few seconds and it shut off.
This time the Mac Pro simply wasn’t rousing itself from its electronic somnolence, even though I could hear its fan running. I mean, it’s one thing when I go in to wake Tristan up and he pretends to be fast asleep or is merely being a groggy pre-teen, but he always makes it out of bed eventually. So you can imagine my surprise the other day when I touched the keyboard to wake it up, only to be ignored. Sleep, wake, sleep, wake - it’s a routine. In the normal course of affairs, my Mac Pro sleeps automatically at night, and I wake it up to work in the morning.