About a week ago I started noticing that my PC, which normally goes to sleep at the three-hour mark of inactivity, would be awake when I returned from work, or to a lesser extent, in the morning.

Using the event viewer, I found that the source of these unwanted wakes - honestly, virtually all my wakes including the "wanted" ones - was Intel(R) Ethernet Connection (7) I219-V.

But I use my mouse - double-click - to wake my computer. Which, as far as I know - confirmed by the wake times earlier than last week - was how/when the computer was waking.

So I turned off that Ethernet connection's ability to wake the computer (using Device Manager). Put PC to sleep manually from the start menu. Double-clicked the mouse, which woke the PC. And the wake source was USB Input Device (my USB mouse).

I'm comfortable I've disabled the unwanted wakes, and relieved that the mouse can still wake the computer.

But I'm also wondering:
  1. Why did the ethernet connection suddenly start waking the computer when I was away?
  2. Why did my mouse wakes show up as ethernet wakes before I disabled the ethernet connection from waking?