Hi fellow Asahi Linux Fed39 users,
I’m ordinarily a Mac user, and I’m at the bottom of a steep Linux learning mountain, so please bear with me. I’m looking for a utility or app preferably with a graphical interface allowing me to set a schedule to adjust Gnome’s appearance to reduce the blue hue and increase the warmer colours at night. Does anything like this exist?
Thank you.
Aubrey
As of the current moment, the night color feature is only available in the KDE Plasma builds. This exclusivity stems from the utilization of a distinctive color adjustment method, facilitated through a specialized color transformation matrix. Unfortunately, this unique approach has not been integrated into other desktop environments or window managers at this point in time.
Under the settings for display there should be a night light setting. After toggling it on you should be able to adjust the hue and the times.
Thanks, Joe and Samil. You’re quite right - under Display (in Settings) there is a Night Shift setting which is greyed out / inaccessible - something about graphics drivers. I suppose it’s a case of being patient. Is this a Fedora / GNome limitation? I’m wondering if a third-party utility would work. Thanks.
Works fine for me in KDE. (Macbook pro m1 14")
I should’ve looked before answering, this needs to be implemented for it to work for Gnome.
Sorry about that.
If it works in Asahi Linux Fedora KDE, then I’ll just chalk this down to a Gnome limitation for now and hold tight. Thanks all.
Is package redshift what are you looking for ?
Yes, that is the sort of thing. I discovered this app in Software (app store) and it installed fine. Unfortunately, when I launch it, nothing happens. There’s a brief spinning wheel, but nothing ever happens. So, I had no choice but to uninstall it.
I’m not familiar with Asahi, but if I’m not wrong, Gnome comes with its own night/day feature. There are a lot of problems with redshift, with the first one being that the project is dead, because how they say it in their GitHub site:
So i think you need to figure it out how the Nigh Light feature works (Settings->Displays):
Ooops, already discussed. Just ignore my answer.
have a look at iris for linux.
Will do. Thanks.
Returning to this topic, has anyone installed Iris on Asahi Linux? One description of the app is as follows:
Asahi Linux Fedora 41+ primarily uses Wayland as its display server protocol. The Fedora Asahi Remix is designed with leading-edge Wayland support, and it emphasizes a highly customizable experience12.
While there is still some compatibility with X11 applications through XWayland, the default sessions for desktop environments like GNOME and KDE Plasma are oriented towards Wayland3. In fact, Fedora 41 has moved towards a Wayland-only approach for its GNOME sessions, effectively sidelining X11
Currently, I don’t have Asahi Linux installed. If anyone has got it working, I’d love to hear from you. Alternatively, if you can spare the time to try it and report back, I’d appreciate it.
Many thanks.
I have prescription glasses and got a noticeable benefit with getting a blue-light filter on em; with the convenience of not having any software involved across different devices 
I’ve also heard one OS’s Night Light implementation causes performance drops in fullscreen games (not sure if Linux or X vs Wayland).
It’s not exactly a solution for this topic, but maybe something to consider.
@Espionage724, glad to hear you have something that works for you. May I ask for more info? Do you mean a phyiscal filter to apply to the screen? When you say “blue-light filter on em”, what’s “em”? External monitor?
It’s likely I’ll take the same approach as you. (It might interfere with watching content, but the cost is negligible.)
Aubrey
I have glasses from Zenni with their “Blokz®+ Tints” option (info), and Rose-tinted (wanted for that nostalgia look but apparently Red and Brown tints also adds more blue-light blocking)
They reduce blue-light to my eyes, from LED bulbs, light strips, demo TVs in a store, and my phone and other devices in-house. I wear prescription lenses all-day so having the blue-light reduction on them is a nice benefit 
Assuming Iris works like all the other filter stuff on X11 like redshift (gamma curves), it will not work (and we don’t support X11 anyway).
You need to use KDE Wayland, or another compositor that supports either CTM or software shaders for this feature. We can’t do anything about GNOME not supporting them.
Thanks, @marcan. KDE is looking like the only option. (Which I’m hesitating over because it reminds me of Windows.) …
Thanks, @Espionage724. I’ve ordered a pair and I’ll see how they fare (rhyme unintended).
