HDMI signal does not turn off, only screen goes dark

[DorSusu]

Hello, I know it from older modules that the 3.3 Volt hdmi signal is switched off after the set time has elapsed. With this module, however, only the screen goes black but the backlight is still active. It looks like a black screensaver. Apparently the hdmi signal is not switched off. I use vnc viewer to adjust and it's the same that the image turns black. Before it was the case that the monitor was disconnected but you still saw the desktop of the pi via vnc.

my system:

`- my senso: HC-501

• Raspberry pi4B
• hdmi mode: "7"
• raspi-config: wayland settings: i am using W3 Labwc
  (with this settings i got no errors)
• os-release:
  PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"
  NAME="Debian GNU/Linux"
  VERSION_ID="12"
  VERSION="12 (bookworm)"
  VERSION_CODENAME=bookworm
  ID=debian`

there is a solution that works for me:
WAYLAND_DISPLAY=wayland-1 wlr-randr --output HDMI-A-1 --off
Monitor goes off
WAYLAND_DISPLAY=wayland-1 wlr-randr --output HDMI-A-1 --on
Monitor goes on

--> However, it must then be set to wayfire with wayland in the raspi config

[bugsounet]

Hi,

there is a solution that works for me:
WAYLAND_DISPLAY=wayland-1 wlr-randr --output HDMI-A-1 --off
Monitor goes off
WAYLAND_DISPLAY=wayland-1 wlr-randr --output HDMI-A-1 --on
Monitor goes on

if works, it's the command used in Display mode: 3
code for on and code for off

Don't forget to change waylandDisplayName: "wayland-0", to waylandDisplayName: "wayland-1", in Display setting :)

[DorSusu]

i change config in MagicMirror to waylandDisplayName: "wayland-0", the screen turn off. in raspi-config i choose W3 Labwc Labwc windows manager with Wayland backend. with this solution, the hdmi signal switch off.
This setting also solves the error problem that popped up when turning the motion detector on and off.

The problem now is that when I use the Raspberry via VNC, the image is still black. As soon as you click on the image with the mouse, the monitor wakes up again and the HDMI signal is active again.
Previously, the HDMI signal was only active when the motion detector was triggered. The HDMI signal should therefore remain off until it is activated again by the motion detector.

[bugsounet]

When using VNC :

• If monitor is OFF (in sleep mode) -> VNC will turn it on automaticaly on connect (monitor will wake up)
• If monitor is ON -> monitor can't going in sleep mode

I didn't code this, it's probably directly related to VNC and/or wayland

When you leave VNC session, Monitor can turn on and off as usual