[tde-users] how to stop power management - hibernate/standby, etc. ?

Okay, so riddle me this. I have totally disabled power management for my system, created a user profile, made it the same as my default profile so that it ought to be the only profile that loads. (I do this through the Trinity Control Center / System Administration / Monitor & Display / Power Managment.) Yet my system still goes into hibernate mode (or so I believe) after it has been left unattended (that is, no direct actions involving myself). This is a desktop system, built by myself out of parts, but I am running Devuan Beowulf and the most recent upgrade from the PTB repository. I don't need to use power management, since there is no battery to worry about. This annoys me on a daily basis, because I get up in the morning (about noon or so), and find that it has gone into hibernate mode, despite the fact that I have left some large downloads unattended, trusting that they could be left to manage themselves. The power light blinks, the monitor has been shut off, etc.; and when I press the power button, it springs back to life, except that I have been disconnected and whatever I have left running has been interrupted only partially finished. It used to be I could create a profile, set it to run as the default, and everything would be fine. But now it always goes into hibernate mode, no matter what I do. I have also tried to create the profile in administrator mode, but the result is always the same. Any clues about what is wrong here? Thanks for any help! Bill