If you haven't switched to Wayland (don't know what the equivalent on there is):
xset dpms force off
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#52People are posting all sorts of code one-liners to do this, but... what happened to just pressing the power button? Pros: * Only 1 keypress per display * The button is guaranteed to be present on all displays by default * It doesn't frustrate you by pointing out the dead pixels * Optimal energy efficiency * You don't have to customize scripts or settings on your OSs, even if you reinstall * You don't have to know if…
Maybe if you have a download or some other long-running process that you don't want to interrupt? What I think would be useful is some way to manually use DPMS to actually power off the display. The only thing I'm aware of is using xset on Linux / X11.
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#53Some months back I built http://keylight.us to use my second monitor as a light during video meetings.
Thank you! I've been wanting to throw something like this together for this exact reason. Normally I just open a blank webpage and manually set the CSS to the color I want but this is way easier and exactly what I'm looking for.
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#54People are posting all sorts of code one-liners to do this, but... what happened to just pressing the power button? Pros: * Only 1 keypress per display * The button is guaranteed to be present on all displays by default * It doesn't frustrate you by pointing out the dead pixels * Optimal energy efficiency * You don't have to customize scripts or settings on your OSs, even if you reinstall * You don't have to know if…
Before my current Chromebook, which allows fully turning off the display, I had a bookmark to a black image so that I could use my Chromebook at night for listening to comedy, etc while falling asleep. Making a black image fullscreen would almost make it so that the display wasn't giving off light.
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#55Some months back I built http://keylight.us to use my second monitor as a light during video meetings.
This is exactly what I was looking for, thank you. I use my second monitor the same way, but I just quickly google the name of a color before a meeting.
I know it's only a few buttons away, but you could add a button to switch to full screen.
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#56Ctrl+L data:text/html, Enter F11 Lately I had been thinking that task _"fill your screen with colour X (really fast)"_ would make a nice (ugly) interview question, revealing creativity and exploring different approaches. For maximum points I'd expect candidate given task "fill your screen with black" to simply turn it off.
this like most trivia based interview questions really just prod "Have you thought about solving this specific, arbitrary problem that pleases your interview lords today?"
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#57Is anyone else getting a certificate error? also.. tangentially I have been experimenting with directly exposing photo paper with my phone screen, and pulling it away in a fraction of a second. Do any android devs out there know if it would be feasible for me to whip up an app that flashed the screen including backlight on and off to show an image for a fraction of a second at a specific brightness?
Software isn't going to know the actual candela output from random screens, or individual devices. You'd have to standardise the hardware or have a v good db of models and light etc.
Or some way to calibrate it I guess
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#58Making your screen all black saves energy. For many monitors this is not true. For a screen where the resting state of the LCD pixels are open displaying black means the monitor has to switch the diffuser to closed in order to block the light, which uses more energy than displaying white. There are lots of different LCD technologies which affect whether black or white is more efficient. For CRT screens black is alway…
My second screen (an LG) turns the backlight off whenever it's all black. My Dell monitors don't do the same, and it's a shame. It's always on but effectively off all the time as it usually is all-black, and thus there's no backlight.
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#59Making your screen all black saves energy. For many monitors this is not true. For a screen where the resting state of the LCD pixels are open displaying black means the monitor has to switch the diffuser to closed in order to block the light, which uses more energy than displaying white. There are lots of different LCD technologies which affect whether black or white is more efficient. For CRT screens black is alway…
And the backlight (presumably 99% of power usage) is on no matter what you do with your pixels.
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#60Ctrl+L data:text/html, Enter F11 Lately I had been thinking that task _"fill your screen with colour X (really fast)"_ would make a nice (ugly) interview question, revealing creativity and exploring different approaches. For maximum points I'd expect candidate given task "fill your screen with black" to simply turn it off.
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