Troubleshooting • Turn of RCA Analog video command line

I have old Raspberry Pi Model B Rev 1 and small video display connected by RCA cable.
Running OS Linux raspberrypi 6.6.20+rpt-rpi-v6 #1 Raspbian 1:6.6.20-1+rpt1 (2024-03-07) armv6l without desktop.

Using this old board as I happen to have it on shelf, also easy to connect existing videoscreen which is originally some reverse camera screen for a car.
Plan is to do small art project where video is looped. When I´m looping video, both PI and screen get little bit warm. This project is aimed to be in exhibition couple of days so I started to think adding PIR sensor and shutting down RCA signal when there isn´t any audience present.
I haven´t found command that I could use to shutdown screen.

Tried so far:
xrandr --output HDMI-1 --off
Command not found

tvservice -o
command not found (too new distro I guess)

vcgencmd display_power 0 3 (I found out this number 3 by trying out)
Screen shuts down but when I try to turn it on again with:
vcgencmd display_power 1 3
RCA somehow turns on because screen wake up (it recognizes active RCA) but it is blank. I cannot continue session wo. starting board again.

Statistics: Posted by PPH76 — Fri May 17, 2024 7:24 pm

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