Sparky LXDE 4.52x_64 stripped down to just an openbox-session. How can I get rid of a reoccurring popup: "Desktop manager is not active."
I finally realized that the regularity of the popup was a clue. I checked my cron jobs, and sure enough, one was set at the same regularity. He was the culprit. I replaced him with a different program and now, no popup. Commands in cron entries apparently have to be very precise, as I remember now that I had this kind of problem before.