Display sendet "Kein Signal" anstatt sich auszuschalten

Canberra

Ich habe am Pi nun einen HDMI–>VGA Adapter angeschlossen. Das Ergebnis bleibt dasselbe. Nach einiger Zeit schaltet sich nicht nur das Display aus, sondern direkt das ganze Board, welches ich dann nur noch über die Fernbedienung starten kann.
Ich nutze die gleichen Befehle und in der /boot/config.txt habe ich nichts geändert…

Ein Test mit einem anderen Monitor ist erfolgreich, er schaltet aus und wieder ein (mit HDMI–>VGA Adapter), wie ich es mit dem PIR Sensor vorhatte. Aufgrund der Bauweise des Displays kann ich dieses aber nicht verwenden.

Es scheint, so als ob ich mich von dem Display und dem Board trennen müsste. Kennt jemand eine passende Kombination oder hat eine Empfehlung für ca. 100 Euro?

Danke

MadScientist

@canberra Can you tell us what controller board exactly you have? You mentioned a remote. Is it correct to assume you a universal controller board like the V56 boards? If so, you’ll need an extra relay to power on/off the display. Although it should power off normally once there’s no HDMI signal anymore. @cruunnerr wrote a very detailed guide on how to use a PIR sensor with your mirror. It offers lots of possible pathways and they are very well explained. Have a look.

Offtopic: Even with a broken English you might get better help than asking in German only.

Canberra

Okay, i hope it isn’t to late. From now i’m going to write in english.

Yes, the Controller is a V56.
Here is the ID: R17112253-GA00668
M215H1-L03 (1920x1080) V56.

I also found a hint to switch the display with an extra relay. When it is the only way, then it has to be…
I hoped there would be an easier way.

I will check the guide of @cruunnerr.

Thanks a lot!!

MadScientist

@canberra The display should at least power off once there’s no HDMI signal detected anymore. It’s a bit weird it doesn’t do it in your case. However, it wouldn’t power back on after the HDMI port has been activated again. Therefore you’ll need a relay for sure.
It’s working really great in my case. I’ve got the PIR-sensor and the relays from AliExpress for just a couple of cents. You can also try those 12V PIR-Sensors, that you plug in between the power supply and your LCD controller board. It’s not working in my case, though. Looks like some signal noise keeps it awake all the time.

Canberra

Thanks.
The Pir is also working fine in my case.
I’m going to buy a relay and then i will see.

Kind regards

MaxxMagic

Konnte das Problem mittlerweile gelöst werden?

Ich habe nämlich das gleiche Problem und überlege auf ein anderes Board umzusteigen ein VGA Board von Pollin evtl. kann dies das Problem lösen.

LG

MaxxMagic

If it is still in progress. Use this board:

https://www.pollin.de/p/lvds-interface-pi-mt6820-vga-zu-lvds-810220

5€and it is working perfect!

Best,

MaxxMagic

Antibraatz

@MaxxMagic said in Display sendet "Kein Signal" anstatt sich auszuschalten:

MaxxMagic

Hello MaxxMagic, that sounds very good. I also tried to turn off my mirror with the T.V56 board via the PIR module, which doesn’t work, the display stays live and lights up like a bedside lamp. Switching it on again is only possible with the remote control of the T.V56 board.
Can you tell me about your suggestion of the LVDS interface PI-MT6820, VGA to LVDS, how to connect it afterwards? Do I also have to order a cable in the shop?

Greeting
antibraatz

MaxxMagic

Hey @Antibraatz ,

if you used these old typical board T.V56 you can use the old cable. But can you give me the specs of your display than we could have a look, because I think the board just supports 8bit.

But I’m not an expert.

Best,
MaxxMagic