Currently attempting to move to Bluetooth keyboard and mouse, yet it looks like previous tricks to enable Bluetooth upon startup no longer work: I have built the /etc/bluetooth/main.conf file as per this, and also applied this trick (namely sudo install -dm700 /var/lib/bluetooth) as well, yet Bluetooth still does not turn on immediately upon startup. I have noticed that I first need to start a web browser session (Chrome in my case), which finally triggers Bluetooth activation (go figure!).
Did anybody else find a solution?