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[marko]

I'm not sure if this is related to the current 'sleep' issue being discussed, but...

If I switch my monitor off using the power switch, it also powers down the integrated USB hub, which is undesirable for me.
To get around this, I use the nifty 'Wizmo' app from Steve Gibson to turn off the monitor. It works a treat.

Recently, within five minutes of being switched off this way, it's back on.

I have narrowed this down to having MC server running, with or without the main UI, behaviour is the same. Close MC and server, turn off the monitor, and it stays off until the keyboard is pressed or mouse moved.

Why would it do that?

-marko.

[Hendrik]

If you can replicate it reliably, just after the screen turned back on, go into a command prompt and run "powercfg -lastwake", and tell us what it says?

[marko]

It returns with "Wake History Count - 0"

If I bring the monitor back by pressing a key on the keyboard, it returns the same.

-marko

[marko]

Note that the PC itself remains up, the aim here is just to turn off the display...

[Hendrik]

Too bad, I thought it might record this as well.
Oh well, guess I'll have to try.

Does it just wake on its own, or do you interact with MC in any way, over remote client/Gizmo/...?
Is it playing Audio at the time? Does it wake on track change?

Anything? 

[marko]

Nope. All that's required is for MC server, and or MC UI to be running.

No audio playing, no client connected, just the server running.

Wizmo, https://www.grc.com/wizmo/wizmo.htm , turns of the monitor using "wizmo.exe -quiet -monoff"
It then stays off until a key is pressed, or at least should do, and did do. Now, if server is running, in less than five minutes the monitor switches back on.

-marko.

[RoderickGI]

Release Notes MC19
19.0.82 (11/25/2013)
 1. NEW: Help > System Info reports anything that changes the system power state in a new 'Power' section (preventing sleep, keeping the monitor on, etc.).
 2. Fixed: The monitor would not correctly be allowed to turn off in some cases in the last few builds.

That should show what MC is doing to wake the monitor/TV. My HTPC has lots of entries in there about keeping the monitor on. I would assume that the server checks if there is anything to do every five minutes, and turns the monitor on when it does this.

I always thought there was a setting like. "Keep monitor on while playing video", but I can't find a reference to that at the moment. It all seems to be intrinsic to the software now, or always was.  

EDIT: I believe I was thinking of the setting under Options > Audio > Settings "Disable display from turning off (useful for HDMI audio)".  Not useful for this issue though.

[marko]

Thanks.
I'm trialling an alternative method here using nircmd at the moment. Initial results appear to be positive....