F.lux For Linux

[Tancredo Dori]

F.lux for Ubuntu is an indicator applet (like the new Messaging Menu), so it works very nicely on Ubuntu 10.04 and 10.10. Michael improved the commandline application by leaps and bounds. There are a bunch of new configuration options (all available in the GUI), the night/daytime cycle is now much more accurate, and it even takes daylight savings into account.

The F.lux indicator applet automatically manages the color temperature of your screen based on your latitude and longitude, or if you are in the US, your zipcode. In the preferences panel, you can set your preferred nighttime colortemperature and see a preview, as well as seeing the current color temperature.

Coming from Python + Qt (for Trimage) , GTK+ feels like a serious step back. The Glade interface builder is clunky and quirky, and surprisingly, modules such as python-gconf and python-appindicator are virtually undocumented. There is a massive amount of time spent on figuring out what-goes-where-and-how.

Michael posted an official announcement on the F.lux website with these instructions as well: f.lux for linux, so be sure to go there and leave nice comments for us and tell us what we can improve! :)

It's even possible that you're staying up too late because of your computer. You could use f.lux because it makes you sleep better, or you could just use it just because it makes your computer look better.

f.lux makes your computer screen look like the room you're in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again.

How do I do this? OrIs there another software I can use that darkens and eliminate the blue light from my screen? I already did the Antarctica attitude trick, but I want something simpler and more reliable.

I see no differences here in configuring Redshift on Linux and f.lux on Windows, except that you can use a GUI on Windows which many users prefer over editing its configuration file/registry on Windows.

Hello all,
Have any of you run F.lux on your system. I think it is better then Nightlight, but i cannot get mine to run on my system. I installed it from the app store and when i click Launch, nothing happens. I have tried changing the permission but nothing. The only thing i can do is download the Windows version and run that, but I would not like to if I have to.

A quick search shows that F.lux is not very well maintained anymore.
This page also mentions that f.lux uses Redshift under the hood which you can also install through the software store, so that may be a better option instead.

Maybe this helps to at least troubleshoot the issue a bit. It's also worth noting that snap packages tend to be limited on how they work due to it being a containerized format. But I've been recently wrong about this so this is just speculation on my part.

I have trained a Resnet18 using Flux on julia-1.10 rc1, actually I have trained multiple models with no trouble at all, but this week when I try to predict using my model I get a compilation error for my private package:

Since I manged to train and run several models before this error surfaced, it is most likely due to a change in a Project.toml somewhere upstream. It can likely be fixed very easily by a package maintainer somewhere.

The best place to troubleshoot issues like these is the CUDA.jl issue tracker. I know there are a million and a half edge cases around discovering the right libraries, so the recommendation from the maintainers has been to open issues with enough information to repro the problem or otherwise deduce what might be happening on your machines.

Hello, I was wondering whether you have got the problem again? It seems I am now having exactly the same problem: cuDNN is not available for your platform (x86_64-linux-gnu-libgfortran5-cxx11-libstdcxx30-cuda+none-julia_version+1.10.0), but CUDA and cuDNN both have been installed fine.

Hi,

I'm new to XFCE and I can't get my favourite program running. f.lux. It turns the turn temperature of the monitor down, so it doesnt strain my eyes. I also tried Redshift but this didnt work either.

I don't believe this is an issue with Xfce. Mostly likely, your video driver doesn't support gamma corrections properly. There is a launchpad question here that discusses this problem with some tests to determine if the video driver supports gamma corrections.

A bit of a long shot here, but try turning off the compositor (Settings Manager >> Window Manager Tweaks >> Compositor) and try f.lux again. I don't see how it can make a difference, but give it a try.

I tried turning off Compositor, it doesnt help flux.
I still have Unity installed, yet somehow flux doesnt work in Unity, Xfce, or LXDE.
I installed LXDE after Unity, and then Xfce after that. if that's relevant at all

Like I mentioned, I'm using the intel on-board graphics driver in xfce, but have a nvidea card that I could try using. It's strange that this used to work.
When I installed the Nvidea driver, then upgraded to 14.04 it crashed my system so I had to uninstall the Nvdia one and to a re-install of ubuntu. I'm fairly positive Flux/redshift still worked at this point. Then, running on Intel driver, I installed LXDE followed by XFCE. Then flux refused to work.

You can simply check the command in a terminal first; if it works, then either do like me and add it to the startup applications, or modify the Redshift desktop file and launch it whenever you feel like.

Also good to see that the plasma widget is still available - I noticed
one of the users who participated in your last thread (the aforementioned
one in 2013) let you know about the widget. It was able to be found at
that time in software.opensuse.org - and probably still can be.

Blue light emissions from computer and cell phone screens have been proven to cause damage to retinal cells over time. I am wondering to what extent does the f.lux app protect against blue light? For example, certain amber tinted lenses will reduce...

In regards to screen brightness and laptops HP (formerly Compaq) used to produce laptops with a light sensor that would automatically adjust the brightness. I really liked that feature but not sure if they manufacture it still.

I have been using f.lux for some time now and it is a really nice tool. It adjusts the color temperature of the screen at night to a more reddish tone which greatly reduces the strain on the eyes. It takes a while to get used to the red tint but now there is no going back.

Other features that are present in the windows version seem to be missing as well in xflux, like setting the daytime temperature. Ultimately I decided to code my own tool to adjust the color temperature. The result is an open source program called Redshift.

Do You know any program for Lubuntu that autostarts to tray icon, and have just nice scroller to control screen temperature? (redshift has no scroller)
Something like F.lux for Windows?
I know there is f.lux for Linux but their write that it not working on modern Ubuntu
(GitHub - xflux-gui/fluxgui: Better lighting for Linux. Open source GUI for xflux)

f.lux (pronounced "flux") is a cross-platform computer program that adjusts a display's color temperature according to location and time of day, offering functional respite for the eyes. The program is designed to reduce eye strain during night-time use, helping to reduce disruption of sleep patterns.[2][3]

On installation, the user can choose a location based on geographic coordinates, a ZIP code, or the name of a location. The program then automatically calibrates the device display's color temperature to account for time of day, based on sunrise and sunset at the chosen location. At sunset, it will gradually change the color temperature to a warmer color and restore the original color at sunrise.[2][3]

f.lux offers a variety of color profiles and pre-defined temperature values, modifying program behaviour for specific programs or activities; including a mode for film watching, decreasing red tinge (for 2.5 hours), and a darkroom mode that does not affect night-adapted vision.[2][3] Times can be inverted on f.lux for PC to provide warm lighting during the daytime (for people who work at night).[4] The program can control Philips Hue LED lighting, so that the color temperature of house lights follows f.lux's settings.[5]

The program is available for Microsoft Windows, macOS and Linux (except for Ubuntu 18.04 LTS). It is also available for Apple iOS devices, although it requires the device to be jailbroken.[6] Apple has not allowed the application in its App Store due to its use of restricted developer tools.[7] The developer briefly hosted an Xcode project on GitHub, allowing iOS 9 users to sideload the application onto their devices, but retracted it at the request of Apple.[8] Following Apple's announcement of a similar function, called Night Shift, in iOS 9.3, the developer called upon Apple to provide developer tools and to allow their application into the App Store.[9] A preview version for Google's Android system is available.[10]

Reducing exposure to bright (1000 lux) blue lights at night time was linked to increased melatonin secretion in a 1996 study[11] but a 2018 study showed that changing the spectral composition of self-luminous displays without changing their brightness settings may be insufficient for preventing impacts on melatonin suppression.[12]

Can not adjust screen temporature by software like redshift, flux, gammy, any other ways? like native commands to test if I can adjust screen temporature or find any misconfiguration of my system.
Specifications:
CPU: Intel i5-1240p
GPU: Intel Iris XE
kernel: linux515
laptop is HP Probook 450 G9

To make it clear, what I did yesterday is to use clonezilla to clone my original portable 1T HDD to 2T SSD and insert the 2T SSD into my new laptop after you help me fix the boot problem. But actually I find the problem of screen temporature also exist when booting with my original portable disk in my new laptop.

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