SUMMARY *** In System Settings>Colors & Themes, there is a setting called Night Light. It flat out does not work. At all. No matter what settings I've set it to, I do not see a preview of the screen getting warmer/darker or brighter/lighter when I slide the light temperature bars. I've tried every option under 'switching times' and there is no difference between any of them and 'always off'. *** STEPS TO REPRODUCE 1. Open System Settings 2. Scroll down to Appearance & Style and select Colors & Themes 3. Under Global Theme, select Night Light 4. Turn on the Night Light OBSERVED RESULT Nothing happened. EXPECTED RESULT Screen would change and get darker or lighter depending on what the slider is set to and what the time settings were. SOFTWARE/OS VERSIONS OS: KDE Neon 6.0 KDE Plasma Version: 6.0.0 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Kernal Version: 6.5.0-21-generic (64 bit) Graphics Platform: Wayland ADDITIONAL INFORMATION Processors: 6 x Intel Core i5-8600K CUP @ 3.60 GHz Memory: 62.7 GiB of RAM Graphics Processor: NV134 GPU: NVidia GTX 1080
Night Light is not working on Arch Linux too. Changes in the KCM take no effect. Operating System: Arch Linux KDE Plasma Version: 6.0.0 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Graphics Platform: Wayland
Hmm, all activation modes are working as expected for me.
Works for me on neon. Could it be that ddcutil is messing with the color configuration? (I know nothing about how night light works so I am just saying words that sound related XD)
Does everyone affected use an NVIDIA GPU?
Intel iGPU here.
This isn't even the only issue I'm having with this OS, but it's one of only two problems that are consistent. The second one is the fact my restart, shutdown, and log off buttons in the start menu don't work so I had to create shell commands named restart and shutdown on the desktop to bypass it... >.<
(In reply to Angel Skyheart from comment #6) > This isn't even the only issue I'm having with this OS, but it's one of only > two problems that are consistent. The second one is the fact my restart, > shutdown, and log off buttons in the start menu don't work so I had to > create shell commands named restart and shutdown on the desktop to bypass > it... >.< That's Bug 481938, which was fixed in Neon's packaging yesterday. I'd strongly recommend doing a full update and then rebooting, which will fix that issue and many others too. Possibly this one. Can you do that?
(In reply to Nate Graham from comment #7) > (In reply to Angel Skyheart from comment #6) > That's Bug 481938, which was fixed in Neon's packaging yesterday. I'd > strongly recommend doing a full update and then rebooting, which will fix > that issue and many others too. Possibly this one. Can you do that? Yeah I can do that. If I'm lucky maybe it'll fix the issue I'm having with Discovery occasionally crashing when I use its search function, then when i try to re-open it, it doesn't show up on desktop though it says it's running in System Monitor, too... I'll let you know the verdict.
Had to reboot so I could actually open Discover, and... there was no update. It said everything was up to date. So I went into the terminal, but it said the same thing. angelskyheart@Azalea:~$ sudo apt upgrade On KDE neon you should use `pkcon update` to install updates. If you absolutely must use apt you do have to use dist-upgrade or full-upgrade in place of the upgrade command. https://neon.kde.org/faq#command-to-update Abort. angelskyheart@Azalea:~$ sudo pkcon update Getting updates [=========================] Finished [=========================] No packages require updating to newer versions.
Huh. Despite that, the restart button in the start menu is working though. Maybe I picked up the update last night and forgot about it or something?...
It works for me on Neon User Edition with an AMD GPU (Wayland). Maybe it's only a problem with Intel/NVIDIA?
I'm on an all-Intel system and it's working for me.
I'm on EndevourOS (Arch extra-testing), wayland, amd rx 6600 night color does nothing (quick test in X11: slider changes colortemp) Via the tray icon i can adjust brightness, but no the color temperature I noticed that Colorblindness Correction does not do anything, too. Color Management lists no Devices night color was working fine in 5.27
(In reply to Patrick Silva from comment #1) > Night Light is not working on Arch Linux too. Changes in the KCM take no > effect. > > Operating System: Arch Linux > KDE Plasma Version: 6.0.0 > KDE Frameworks Version: 6.0.0 > Qt Version: 6.6.2 > Graphics Platform: Wayland Humm, I have tested a live usb with neon-user-20240303-0009.iso on this computer and Night Light works this time. Also tested tested linux-lts 6.6.20-1 on Arch Linux and Night Light does also not work with it.
Om my system Night Light works on X11. All affected users are using Wayland.
with neon-testing-20240227-0254.iso live usb nigh light is working, so thats an arch thing or my installation wayland that is. amd rx 6600 > I noticed that Colorblindness Correction does not do anything, too. Forget this, its working fine
On Wayland here, KDE Neon, Night Light is working
Night light doesn't work. Neon 6.0.0, Qt 6.6.2. Kernel: 5.15.0-97-generic (64-bit). Wayland / NV117
(In reply to Harald Sitter from comment #3) > Could it be that ddcutil is messing with the color configuration? (I know > nothing about how night light works so I am just saying words that sound > related XD) Night light is done by KWin on the GPU, either in the scanout hardware if available, or in a shader if not. The display isn't involved. Can anyone where it doesn't work try forcing the shader fallback? You can do that by setting KWIN_DRM_FORCE_COLOR_MANAGEMENT=1 for KWin
(In reply to Zamundaaa from comment #19) > Can anyone where it doesn't work try forcing the shader fallback? You can do > that by setting KWIN_DRM_FORCE_COLOR_MANAGEMENT=1 for KWin Your env variable fixes night light on my system. Operating System: Arch Linux KDE Plasma Version: 6.0.1 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 Graphics Platform: Wayland
I also has this env variable on my system: KWIN_DRM_NO_AMS=1 After removing it, night light works even without the env variable from comment 19.
(In reply to Patrick Silva from comment #21) > I also has this env variable on my system: > > KWIN_DRM_NO_AMS=1 > > After removing it, night light works even without the env variable from > comment 19. thx. same for me. is KWIN_DRM_NO_AMS=1 still needed to allow tearing?
Thanks, that helps narrow it down a lot. > Is KWIN_DRM_NO_AMS=1 still needed to allow tearing? Yes.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/5373
thx for looking into it, and keep up the good work . )
Git commit 568f9fb666dd0d3b969419ac2b09542b56cf07a0 by Xaver Hugl. Committed on 07/03/2024 at 00:50. Pushed by zamundaaa into branch 'master'. backends/drm: ignore ctm support on legacy M +1 -1 src/backends/drm/drm_pipeline.cpp https://invent.kde.org/plasma/kwin/-/commit/568f9fb666dd0d3b969419ac2b09542b56cf07a0
Git commit 29838e1e5bf7514718b77ff4e666b846c0f2d320 by Xaver Hugl. Committed on 07/03/2024 at 12:22. Pushed by zamundaaa into branch 'Plasma/6.0'. backends/drm: ignore ctm support on legacy (cherry picked from commit 568f9fb666dd0d3b969419ac2b09542b56cf07a0) M +1 -1 src/backends/drm/drm_pipeline.cpp https://invent.kde.org/plasma/kwin/-/commit/29838e1e5bf7514718b77ff4e666b846c0f2d320
can confirm, works for me on 6.0.2 (arch/extra-testing) without KWIN_DRM_FORCE_COLOR_MANAGEMENT=1