I recently purchased a M1 Mac mini, as my old windows desktop gave up the ghost. Since I had existing displays, decided to use the HDMI out and the thunderbolt port (with an adapter) to connect the existing displays. I have connected an external SSD to the second thunderbolt port. If I don't use the Mac for a while, the second display (connected to thunderbolt) doesn't work. I have to unplug both the connection on thunderbolt ports and plug it back in to make it work. The Mac mini is powered on most of the time. Is there some power saving setting that causes this issue or a setup/usage fault or hardware issue that requires a call to Apple? I have updated the mini to the most recent version of Monterey as well.