從你的電腦上關閉你的顯示器肯定會加速你的工作流程。有可能嗎？

今天的問答環節是由SuperUser提供的，SuperUser是Stack Exchange的一個分支，是一個由社群驅動的問答網站分組。

問題

超級使用者讀者Squ36想知道他是否可以讓他的電腦告訴他的顯示器該怎麼做：

I was wondering if it was possible to power on/off a display using a computer connected via HDMI. Let me explain :

I want my computer to power off my monitors (not standby mode) when I don’t use it (no keyboard/mouse input) for more than 15 minutes, and power them back when such input is received. My monitors are connected over HDMI, so I was wondering if it was possible to use the CEC functionality with a computer. If is it possible, then is there a hardware requirement ?

My point is that I often take a break from my computer, but forget to turn off the screens, and I would prefer to shut down the screens completely instead of putting them to standby mode.

他怎麼能這麼做？

答案

SuperUser contributor Synetech提供了一些見解和解決方案：

I want my computer to power off my monitors (not standby mode) when I don’t use it (no keyboard/mouse input) for more than 15 minutes, and power them back when such input is received.

What you want is exactly what you are trying to avoid.

If the monitor is actually, fully off, then it can’t turn back on from a signal on the video cable. To allow it to turn on like that, there needs to be some sort of circuit in the monitor that remains on and active to watch for the signal. Monitors already have such a circuit, but turning them off turns that circuit off as well.

To use that circuit, you need to leave some electricity in the monitor, and that is exactly what standby does: it turns the display (and speakers, and everything else) off while leaving that one **all circuit active.

With most modern monitors, there is essentially no difference between standby mode and fully off other than a tiny low-voltage trickle in that circuit and the LED on the front.

I have to pay for electricity, so we always avoid using electricity as much as is humanly possible, yet, I leave it in standby when I am using the computer and need to step away for a while (I turn both off when I am done for the day).

Instead of letting the monitor remain on for 15 minutes for nothing, your best best is to do what I do and simply get into the habit of either turning the monitor off whenever you get up to step away, or to manually put it into standby mode. What I do is to use the AutoHotkey script below (can be compiled to an executable that runs in the background if desired) to let me press ⊞ Win+M to sleep the monitor whenever I get up. Other opti*** include using a shortcut or program, using a script or program to do it with a mouse-cursor hot-corner, or even just reducing the timeout from 15 minutes to five or so.

我們強烈推薦的一種解決方案是將顯示器連線到專用的電源板上，以便一下子切斷所有顯示器的電源。雖然這個解決方案在原則上看起來是實用和有效的，但我們發現在應用中完全切斷顯示器的電源（而不是使用電源按鈕）經常會導致顯示器設定被刪除。無論我們用電源板上的一個開關節省了多少時間，我們都在重新配置顯示器時損失了時間。

有什麼要補充的解釋嗎？在評論中發出聲音。想從其他精通技術的Stack Exchange使用者那裡瞭解更多答案嗎？在這裡檢視完整的討論主題。