My emails to this list are delayed by about 24 hours (am I the only one?) but I think I may have solved my issue with systemd-logind, thanks to the helpful command posted earlier by Mr. Biebl.
After running the command, I saw a message that grabbed my attention; "suspend.target is masked". Jumping back on to the search engines, I come across this <http://forums.debian.net/viewtopic.php?f=5&t=129356><http://forums.debian.net/viewtopic.php?f=5&t=129356> topic almost immediately (somehow my searching before completely missed it?). In the topic, the user was experiencing nearly the exact same issue. They checked /etc/systemd/login.conf and set the following options: HandlePowerKey=poweroff HandleLidSwitch=ignore IdleAction=ignore IdleActionSec=30min Going to the /etc/systemd folder however, I see that there is no login.conf file - only a login.conf.bak file, which I must have been editing before since a couple of the lines were already commented out. I mv'ed the file back to login.conf, made sure the above lines were enabled, and rebooted the machine. No more excessive CPU usage! I think this raises a few questions; - Why was this absurd CPU usage occurring in the first place, - In the comments at the top of the file, it seems implied that the file should be regenerated if it does not exist. Then why wasn't the file being regenerated since I had moved it? What was logind using as configuration instead? Does anyone think this deserves a bug report or am I misunderstanding something here? Glen