Mac mini won't wake acer X34P monitor from sleep

Only owned it for a couple of weeks, Won't even wake monitor after log in screen. At first I replaced the HDMI cable, made no difference .I than read what I could on apples site about setting changes (not allowing the monitor to sleep etc) made no difference. I have found a solution that works I purchased apples USB-C to Digital adapter, and after plugging the HDMI cable from the monitor into the adapter the Monitor and the Mac mini are working as they should. I hope my experience can help others. Im sure future updates should fix this.