I have a startup application that runs successfully on the Jetson TK1. This application does not require a screen to run, so I disconnected the HDMI cable. But when I remove the HDMI cable from the Jetson, the application is not able to run (I checked by SSHing into it). I assumed that during boot up the HDMI is turned off for power saving, which may affect the startup application. Any suggestions on how to run a startup application program without HDMI plugged in would be appreciated.