Read the statement by Michael Teeuw here.
UNSOLVED MagicMirror wont wake up after long sleep cycles. Only black screen with cursor appears.
Hello all! Just finished my build yesterday, and I noticed that after long sleep cycles, the monitor turns on with detected movement (PIR sensor), but MagicMirror itself is just a black screen with my mouse cursor. I am also not able to close MagicMirror by pushing alt. I have to restart the pi to get MagicMirror to load properly after the long sleep. Has anyone had a problem like this? Is there a setting to not have the MagicMirror program sleep?