Lumen: Auto brightness based on screen contents
anishathalye.com
anishathalye.com
One big problem with this setup is that my laptop’s backlight is either so dim that I can’t read the text in my terminal or so bright that I’m blinded by looking at websites. The problem is especially bad at night.
That suggests the contrast is insufficient. On a monitor with both controls, this means turning up the contrast while keeping brightness the same or slightly reduced.
Personally, I just use a light color scheme for my terminals and keep brightness as low as possible.
It's at best a 150ppi (1600x1200, 2000 pixels along the diagonal over 13") screen, lower resolution than the original Kindle.
It's hard to demonstrate something that changes your screen brightness, because brightness changes won't be captured using screen capture software, and because what people see would depend on their screen brightness setting too. I could have used a video camera or something to record my computer's screen, but I thought that would be overkill / not worth the effort, so I just opted to produce a gif that does an okay job of illustrating the effect.
There's kind of the same thing on my TV, and it sucks balls.
The changes in brightness is extremely unnerving, especially for action scenes where the light intensity varies a lot. So it was the first thing I disabled.
So IMHO this won't work that well.
That being said, I think the effect will be less unnerving in an interactive environment where you control the contents of the screen. My phone also automatically adjusts brightness based on the brightness levels outside, and I don't find that annoying.
can install with 'pip install autolux'. uses imagemagick, xdotool and xbacklight. please make it better
hackervision inverts website's colors. I'd prefer to read white-text-on-black-background everywhere. If I start using programs that force a white background, I'd consider using lumen.
For the use case described in the blog post, though, I think it's pretty useful. I've been using Lumen every day while working, and it's been pretty helpful to me.
The only time I change my brightness is when my laptop is unplugged, or when I'm using it very late at night with no external light.
Others may prefer the Lumen way, but I wouldn't use it even if I were paid for.
Another would be when switching between sublime and stackoverflow.
I found a fix though(For dell laptops only). If you disable this via the intel video settings screen and you're plugged in to a power source, just remove and reattach the power cable and your screen should be fine.
Now, about these two features: One of them turns off the backlight when I lock my screen, the other adjusts the backlight intensity automatically based on the display contents.
Did you think “SUPER ENERGY SAVING” was the first and “DFC” was the second? Nope, of course not - it was the other way around. “SUPER ENERGY SAVING” advertises itself as “saving energy” by reducing the backlight intensity when it's “not needed as much”, and “DFC” advertises itself as increasing the “dynamic” contrast (by basically turning off the backlight during the black frame test pattern).
Good job LG. This is actually one of the least sad bits about the OSD's horrible design and implementation.
I also hope there will be a Linux version, that plays nicely with Redshift, because that's my set-up.
I haven't found redshift to play nicely with manual xrandr brightness adjustments. I've to shut down redshift to just lower the brightness below 1 at night, which sucks (because I lose redshift)
I just wish I could save some presets and quickly switch between them from the GUI, like how I used to use f.lux' ember and darkroom modes for late-night reading.
That means that my terminal, Spotify, my desktop, and finally Chrome are all dark at night.
[1]: https://chrome.google.com/webstore/detail/dark-reader/eimadp...
Night Mode Pro, firefox extension to invert colors of website; https://addons.mozilla.org/en-US/firefox/addon/night-mode-pr...
Stylish, firefox extension to apply styling on sites (make white background dark): https://addons.mozilla.org/en-US/firefox/addon/stylish/
There is more options, for other browsers too. Article: http://www.ghacks.net/2015/05/18/turn-any-page-in-a-night-fr...
#!/bin/bash
for output in $(xrandr --current | grep -e "DVI[^\ ]*" -o)
do
xrandr --output $output --brightness $1
done
And yes, the script could be made nicer, but it works for me, which is enough.
In a similar vein, I've benefited from using the Dark Reader plugin for Chrome: It does an excellent job for most webpages. I use it for hackernews, reddit, youtube, language learning sites, etc.
[https://chrome.google.com/webstore/detail/dark-reader/eimadp...]
Giving up on the cool hacker look and changing my Emacs and Terminal to black on white is one of the best things I've done. My desktop background is pure white too.
1. Start Lumen 2. Open up a dark window (e.g. a terminal) and make your display bright according to your preferences 3. Wait a second 4. Open up a light window (e.g. a web browser) and make your display darker according to your preferences 5. Wait a second
Now try switching back and forth between the two, and you should see it automatically doing stuff.
s/contents/content/g
I hate it when people replace "automatic" with "magic". It's not magic.
"The word 'technology' means 'magic'! It's basically anything that's really cool that you don't know how it works."
I.e., 'What' is just the top-level abstraction. 'How' is the functional composition underneath.
The Jargon File defines it similarly: http://catb.org/jargon/html/M/magic.html