pc电源改可调

Powering down your monitors from your PC would definitely speed up your end-of-day workflow. Is it possible?

从PC上关闭显示器电源肯定会加快您的日常工作流程。 可能吗？

Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-driven grouping of Q&A web sites.

今天的“问答”环节由SuperUser提供，它是Stack Exchange的一个分支，该社区是由社区驱动的Q＆A网站分组。

问题 (The Question)

SuperUser reader Squ36 wants to know if he can have his computer tell his monitors what to do:

超级用户阅读器Squ36想知道他是否可以让他的计算机告诉监视器该怎么做：

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

我想知道是否可以使用通过HDMI连接的计算机打开/关闭显示器的电源。 让我解释 ：

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 ?

我希望计算机在超过15分钟不使用时(没有键盘/鼠标输入)关闭显示器的电源(非待机模式)，并在收到此类输入后将其关闭。 我的显示器通过HDMI连接，所以我想知道是否可以在计算机上使用CEC功能。 如果可能，那么是否有硬件要求？

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.

我的观点是，我经常在计算机上休息一下，但是忘记关闭屏幕，并且我宁愿完全关闭屏幕，而不是将它们置于待机模式。

How can he go about this?

他怎么会这样？

答案 (The Answer)

SuperUser contributor Synetech offers some insight and a solution:

超级用户贡献者Synetech提供了一些见解和解决方案：

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.

我希望计算机在超过15分钟不使用时(没有键盘/鼠标输入)关闭显示器的电源(非待机模式)，并在收到此类输入后将其关闭。

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

您想要的正是您要避免的东西。

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.

如果显示器实际上是完全关闭的，则无法通过视频电缆上的信号重新打开显示器。 为了使它像这样打开，监视器中需要有某种电路保持接通并处于活动状态以监视信号。 监视器已经具有这样的电路，但是将其关闭也会关闭该电路。

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 small circuit active.

要使用该电路，您需要在监视器中留一些电，这正是待机的作用：它关闭显示屏(和扬声器，以及其他所有设备)，同时保持一个小电路的活动。

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.

对于大多数现代显示器，待机模式和完全关闭之间基本上没有区别，除了该电路中的微小低压low流和正面的LED之外。

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).

我必须支付电费，因此我们始终避免尽可能多地使用电，但是，当我使用计算机时，我将其保持待机状态，并且需要离开一会儿(完成后，我都将其关闭)一天)。

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 options 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.

最好的最佳选择是执行我的操作，而不是简单地养成在每次起步时都关闭显示器或手动将其置于待机模式的习惯，而不是让显示器保持15分钟的空闲时间。 。 我要做的是使用下面的AutoHotkey脚本(如果需要，可以将其编译为可在后台运行的可执行文件)，让我在每次起床时按⊞Win + M可使显示器Hibernate。 其他选项包括使用快捷方式或程序，使用脚本或程序通过鼠标光标的热角来完成此操作，甚至只是将超时从15分钟减少到五分钟左右。

;Monitor Standby Hotkey
;⊞ Win + M puts monitor in standby
#m::
Sleep 1000 ; Pause for 1sec to prevent un-sleeping when key released
SendMessage, 0x112, 0xF170, 2,, Program Manager
; 0x112 is WM_SYSCOMMAND, 0xF170 is SC_MONITORPOWER
; Use  1 in place of 2 to activate the monitor's low-power mode
; Use -1 in place of 2 to turn the monitor on
return

;Monitor Standby Hotkey
;⊞ Win + M puts monitor in standby
#m::
Sleep 1000 ; Pause for 1sec to prevent un-sleeping when key released
SendMessage, 0x112, 0xF170, 2,, Program Manager
; 0x112 is WM_SYSCOMMAND, 0xF170 is SC_MONITORPOWER
; Use  1 in place of 2 to activate the monitor's low-power mode
; Use -1 in place of 2 to turn the monitor on
return

One solution we can strongly recommend against is hooking up your monitors to a dedicated power strip in order to kill the power to all of them in one swoop. While this solution seemed practical and efficient in principle, we found that in application completely cutting power to the monitors (instead of using the power button) would frequently lead to the monitor settings getting wiped. Whatever time we saved with the single-switch on the power strip we lost in reconfiguring the monitors.

我们强烈建议您采取的一种解决方案是，将显示器连接到专用电源板上，以便一口气杀死所有显示器的电源。 尽管此解决方案在原理上似乎实用且有效，但我们发现在应用程序中完全切断显示器电源(而不是使用电源按钮)通常会导致显示器设置被擦除。 无论我们用电源板上的单开关节省时间是什么，我们都在重新配置显示器时会丢失。

Have something to add to the explanation? Sound off in the the comments. Want to read more answers from other tech-savvy Stack Exchange users? Check out the full discussion thread here.

有什么补充说明吗？ 在评论中听起来不对。 是否想从其他精通Stack Exchange的用户那里获得更多答案？ 在此处查看完整的讨论线程。

翻译自: https://www.howtogeek.com/172930/is-it-possible-to-power-down-my-computer-monitors-from-my-pc/

pc电源改可调