4k Tvs power save through Windows, hacks to enable to function like LCD power? or just leave on; CEC

markm75

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This is probably a dumb question.. but basically i have a Samsung 6290 series 4k tv.. Windows 10 power save mode will trigger after so many minutes and the screen goes to "no signal" floating around..

The only solution to get the screen to shut off is to set the timer in the set to 2 hours (which i think is the minimum)..

So even when this occurs, you return to the pc, wiggle the mouse, of course the TV doesnt power back on, because it lacks power management to know to come on and your left to use the remote to turn it on

Yes this is a minor inconvenience but still..

Are there any 3rd party power management devices that can interface and make the tv act like an LCD.. guessing not, but you never know :)

I guess the alternative is, to NOT turn the tv off after so long and just let it stay in "No signal" mode on the screen.. which probably still uses less power than full on anyway.. not sure if even this no signal mode would shorten life by much or not..

Leaning towards this latter idea, because i'm lazy at times

Any thoughts
 
Look in the menus for an automatic power off timer.

TVs do tend to be dumb (and not in the simple way) in this regard.
 
TV's can be controlled only via HDMI-CEC, most can't act like monitors when it comes to lost signal.

A very hacky idea would be :

Hardware side : https://www.pulse-eight.com/p/104/usb-hdmi-cec-adapter
Needed so we can send HDMI-CEC command to display to turn itself off.

Software side :
Autohotkey + https://autohotkey.com/board/topic/36718-wrapper-to-catch-power-management-events-like-standby/ or https://autohotkey.com/board/topic/54195-how-to-detect-the-power-state-of-lcd-display/ etc.
You can then combine that detection of display being off with sending commands via cec-client.exe installed with drivers for the USB HDMI CEC adapter.

So you will have to execute this command as a reaction to that even in AHK :
Code:
echo standby 0 | cec-client.exe -s

Disclaimer: never tested, just an idea if no other solution is found.
 
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Windows 10 power save mode will trigger after so many minutes and the screen goes to "no signal" floating around..

I just want to drop in to say be careful about leaving that blinking "No Signal" message on too long, as you could suffer horrible burn-in on the center of your screen.

I have the exact same TV, and I basically used the "Display Off" feature, thinking that in that the TFTs would also be deactivated, but in reality, it was only the backlight.

Here's a photo of the burn-in, where you can see the ghosted after image of the "No Signal" box, which is noticeable during calibration:

20170109_005144.jpg


TL;DR Don't dumb ass like me, and make sure to turn off the TV fully when the display power saver mode kicks in, or use a black screen saver instead.
 
TV's can be controlled only via HDMI-CEC, most can't act like monitors when it comes to lost signal.

A very hacky idea would be :

Hardware side : https://www.pulse-eight.com/p/104/usb-hdmi-cec-adapter
Needed so we can send HDMI-CEC command to display to turn itself off.

Software side :
Autohotkey + https://autohotkey.com/board/topic/36718-wrapper-to-catch-power-management-events-like-standby/ or https://autohotkey.com/board/topic/54195-how-to-detect-the-power-state-of-lcd-display/ etc.
You can then combine that detection of display being off with sending commands via cec-client.exe installed with drivers for the USB HDMI CEC adapter.

So you will have to execute this command as a reaction to that even in AHK :
Code:
echo standby 0 | cec-client.exe -s

Disclaimer: never tested, just an idea if no other solution is found.

Thanks for this tip.. i had actually just discovered this option.. i guess its one way around the issue.. in my case i ended up going to a 43" sony x800D (less ghosting than the samsung).. also thanks for that tip on the burn in.. realizing i had left it powered "on" for some time.. with the sony its even worse .. static no signal upper left and a grey screen.. so i'm going to make sure this thing gets shut off (though i didnt think modern lcds were still susceptible to burn in)

I assume somehow the autohotkey command will need to fire the moment the machine wakes from sleep somehow? Maybe via task scheduler?
 
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I never tried it though, but that is why i linked those ahk links, that event should fire when system tries to put the monitor in standby mode. But again, never tried it.
 
I never tried it though, but that is why i linked those ahk links, that event should fire when system tries to put the monitor in standby mode. But again, never tried it.
Sounds as if that may work to turn it off, but not back on after resuming standby, or even after just wiggling the mouse (and not in pc standby but monitor standby)..
 
Just an update.. i've been using the cec adapter for some time now.. while it works fine, it always forces standby for some reason, which the vendor has no idea why.. i posted a dedicated thread on this issue here.
 
I also have a 6290. Personally, whenever I leave the room to not use the PC for a while, regardless of the PC being on or off, I just turn off the screen. When I'm back, I turn it on. Takes 1 second, not the end of the world.
 
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