Just to make sure, are you running on Wayland as well? I’ve had a similar thought before, but some of the docs for powerdevil mention that while it does handle monitor poweroff functions, when running Wayland some of those tasks are handled by KWin instead. Mentioned here. I want to make sure that I’m testing the right thing before I make any changes to powerdevil configs. If you haven’t done it yet I’m willing to try myself, but if powerdevil isn’t actually handling these functions in Wayland I don’t have hopes for it working.
FYI, not being able to post links is a userclass limit here. I bumped into the same thing earlier when posting some of those logs as they had URLs in them (I think Steam was checking for updates?) For anyone else reading here I believe you were talking about this section of the Readme.
It’s been nearly a week since I checked in last, and I can even more confidently say that the freezing issues are not caused by sleep alone. No hitching to be had despite many sleep/wake cycles of various durations for the past week+. In fact, the only issue I currently have is related to desktop icons wandering around, which I’ll need to look into more threads for help, or make one myself. Though not being able to turn monitors off after inactivity is not ideal, so I’ll re-enable that to see if it was fixed in a random update, or start testing a couple things posted here to see if they work if it wasn’t.