Doesn't work on Ubutnu 18.04

[Ahmed-E-86]

NOTE FROM MAINTAINER: This issue was closed as a duplicate of Issue #27.

I can install it and run it successfully, but it does not work.

I tried to compile it manually, but when I try to run it in terminal, it gives me this error :

Gtk-Message: 02:52:44.841: Failed to load module "canberra-gtk-module"

[PierreTurnbull]

I also can install it and run it, but it doesn't change the light color.

However it has nothing to do with the canberra issue. You should be able to solve the latter by installing some versions of it that you don't have. You should find all you need here.

[HattinGokbori87]

f.lux doesn't work for most 18.04 users. Used to work till 17.10. The last time I tried to run it on 18.04, it showed a message saying it only supports 8 and 10 bit display. Use Redshift from official repository (sudo apt install redshift-gtk), and create the configuration file as described here.

[mcoimbra]

Has there been any development regarding f.lux on Ubuntu 18.04? I can start it but there is no panel icon nor interface for it.

[ghost]

Ubuntu 18.04.1 LTS here. It doens't work either. Will try to contribute ASAP.

[mcoimbra]

@DimitrisPr do you have any idea what the issue might be? Caused by some gnome compatibility? I ask because other programs such as Dropbox were affected as well - they don't show up on Gnome's panel.

[ghost]

xflux works only with python 2, but latest ubuntu update has only python 3 installed by default. This is probably the reason. Check here

[cooperka]

fluxgui definitely worked for me on a fresh install of Ubuntu 18.04.1 LTS a couple weeks ago, but after installing Nvidia drivers and messing with Python configs and other things, it no longer works. I'm not sure what broke it but it did work on Ubuntu 18.04.1 LTS originally; screen turned red at sunset but now it just stays blue.

[cooperka]

And @ahmed-elsayed2017 to fix your canberra-gtk-module warning (doesn't fix xflux, but does make the warning go away):

sudo apt install libcanberra-gtk-module

[anebz]

mid-December, it has never worked in my Ubuntu 18.04.1 LTS (not after fresh install, not after installing Nvidia drivers). Is there any progress? Any chance to get an ETA?

[ntc2]

@anebz it depends on why it isn't working for you. If it's not working because of #27, then no, there is no plan to fix that. The xflux binary that actually changes the screen color is closed source, not maintained by us, and seemingly no longer maintained. If it's not working because of the "canberra gtk" problem, then try https://github.com/xflux-gui/fluxgui/issues/102#issuecomment-423400465.

[Ahmed-E-86]

OMG! I've stopped using both Ubuntu and Flux since 5 months . I've been using Manjaro KDE and (Redshift with a widget to control its settings).

[cooperka]

Do you mind keeping this issue open actually, @ahmed-elsayed2017? It's still a valid issue even if you don't personally need it anymore; it helps other people find it.

[ntc2]

I just closed this because

• fluxgui itself does work in Ubuntu 18.04 for me now with PR #112 merged, and I added the ganberra-gtk-module to the deps in the README, so I think only #27 remains. NOTE: xflux does not work for me on 18.04, so the screen color doesn't change, see the next point.
• as explained in #27, we can't fix that issue, because xflux is closed source. I think the long term solution is for users to abandon fluxgui and switch to redshift-gtk, or for fluxgui to add a backend that uses redshift to change the screen color. i'll create a separate issue for that ...

[Ahmed-E-86]

I use Redshift, and it has a widget to control its settings. You can find its widget if you are using KDE or Cinnamon, and if you are using Gnome, there is integrated night mode that you can use.

[ntc2]

Yes, I'm using redshift-gtk, the redshift widget, on both my home and work computer now. Works great!

[lmingde]

I start flux on Ubuntu 18.04, at begin the color change by flux, but quick return to the normal appearance which no use flux, what the problem it is? Anyone can help me?

[josemarcosrf]

There's a Night Light setting in Ubuntu 18.10 (under Settings > Displays > Night Light) that I found it was in conflict with f.lux. Launching f.lux from the command line would cause some flickering, I believe because of both f.lux and the Ubuntu setting trying to change the display color temperature.

Disabling the Ubuntu setting and running f.lux from the command line brought everything back to normal

[regulator-g]

Also recommend redshift, using it on 19.04 with no issues and I have a manual config file where i set the location, time and temp settings

[abhi1kush]

There's a Night Light setting in Ubuntu 18.10 (under Settings > Displays > Night Light) that I found it was in conflict with f.lux. Worked for me thanks jmrf

[ghost]

Bionic as well here. f.lux won't even start.