Mac Mini M1 does not awake from sleep on mouse button or key press
When it was new (a few months ago) my Mac Mini M1 used to wake from sleep normally with either a mouse button or key press, regardless of whether I had put it to sleep or it timed out and went to sleep automatically. Recently, I have had to wake it from sleep by pressing the power button briefly if the device has been asleep for long enough for the external (Time Machine) hard drive to switch itself off. There was some correspondence about this issue a year or two ago but all has gone quiet since. Am I alone? It's not a major issue - just a slight annoyance - but it is a little frustrating.
I am running Monterey 12.4 and have a refurbished wired Apple keyboard (A1243) and mouse (A1152) - I dislike using battery-powered wireless input devices with a desktop. I have an AOC Q24V4W1G5 Display connected via its DisplayPort interface. The external 1TB hard drive came out of my old (2013) iMac and is housed in an OWC Express enclosure connected to one of the Mac Mini's built-in USB-3 ports.
This behaviour may have started when I upgraded to Monterey 12.4 (from 12.3) but I cannot confirm that. Does anyone have any comments or ideas on how to get my Mac Mini to behave normally again?
Mac mini, macOS 12.4