T6 with hdmi display cannot control screen shutdown

ipestell · Post by **ipestell** » Sat Dec 26, 2020 1:59 pm

Hi
I have a T6 with an HDMI display. I am running a monitoring program written with VB.net 2019.
I am able to shut the screen down within my software no problem.
I have tried using a similar command to the shutdown command with the appropriate parameter changed, I have tried to simulate a mouse movement, and I have tried a send key function, but none of them work.
Does anyone have any suggestions?
TIA
Ian

Post by **ipestell** » Sat Dec 26, 2020 2:19 pm

P.S.
I cannot adjust the brightness either.

Rudi452 · Post by **Rudi452** » Mon Dec 28, 2020 1:40 am

Hi Ian,
how exactly did you 'shutdown' the screen? If you really send a shutdown to the screen, it is - off. You need to send a 'sleep' command ro be able to 'wake it up' again.
R

Post by **admin** » Tue Dec 29, 2020 3:52 am

You can try: Win+r, open the run, enter CMD, after opening CMD, enter the command: shutdown -s -t 5, it will automatically shut down after 5 seconds.

Post by **ipestell** » Sun Jan 03, 2021 4:33 pm

Rudi452, Admin

Hi,
Thanks for your responses. My problem is not shutting it down, I can do that either via the program or using sleep, or screen saver to a blank screen.
My problem is waking it up again.
I have a microcontroller which has a PIR attached to it, and sends a code to the PC Program. The program recognises the code and goes to a function.
This is all working perfectly. My problem is including a bit of code that will trigger the screen. I have tried simulating a mouse movement, and a key stroke and sending a message, but none of them has any affect. If I touch the screen when the blank screen saver is showing, it responds correctly, but has no effect if the screen is shut down by the sleep option.
I can get all the things I have tried above to work on my development laptop.
Any suggestions would be very welcome, as I am at a loss now.
All I wish to achieve is for the screen to shutdown in some way, and then re-activate when someone walks into the room.
Also, using the brightness control has no effect.

Thanks in advance
Ian

Post by **admin** » Tue Jan 05, 2021 3:04 am

We have no way to help you DIY your own products. Therefore we cannot provide good advice.

Post by **ipestell** » Thu Jan 07, 2021 1:10 pm

Hi,
I accept your comment, although I posted in the hope other users may be offer some help, however, what about the issue that the brightness control has no effect?

Regards
Ian

Post by **admin** » Wed Jan 13, 2021 8:57 am

We recommend that you use the brightness setting that comes with the monitor so that your display effect will be more balanced. For the system, all you can do is dark mode.

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