Programmatically determine if a display is On or Off

A Just Add Power Receiver keeps track of whether the connected display is powered on or off. Essentially, the Receiver is looking for an active HDMI connection to a display. Telnet into a Receiver and send this command: cat /sys/devices/platform/display/monitor_info | grep "attached=y" -c Responses: * 0 = The di…

Troubleshooting

21-Jun-2024