I remember when Ubuntu was first becoming popular. At the time, Windows boot times were long--I don't have timings, but my memory seems to say something like 5

I remember when Ubuntu was first becoming popular. At the time, Windows boot times were long--I don't have timings, but my memory seems to say something like 5 minutes. And Intel processors were in the middle of their highest-energy-use period, so they ran hot, meaning you couldn't just leave your laptop on all the time. So reboot time was a significant part of my experience as a Windows user. When I first booted Ubuntu, the boot time was fast, something like a 1 minute, and later I tried Xubuntu which was closer to 30 seconds. This was an advertised advantage of Ubuntu, and it was a big part of why that was "the year of desktop Linux" (if only for me). In the following years, I noticed significant improvements both to boot times in Windows and to their "sleep"-type features. I suspect this was motivated at least in part by competition from Ubuntu.