“Night Light” does not work hdmi display (the nvidia card)

General Help
,
1

“Night Light” does not work hdmi display (the nvidia card)
It only works on display port connected display (the intel card).
The integrated display of the laptop is disabled (laptop is closed).
Is a Dell G15 with Nvidia RTX 3050, with nvidia driver open 570 and kernel 6.8.0-58-generic

sudo lshw -C video
[sudo] senha para eduardo:          
  *-display                 
       descrição: VGA compatible controller
       produto: NVIDIA Corporation
       fabricante: NVIDIA Corporation
       ID físico: 0
       informações do barramento: pci@0000:01:00.0
       nome lógico: /dev/fb1
       nome lógico: /dev/fb0
       versão: a1
       largura: 64 bits
       clock: 33MHz
       capacidades: pm msi pciexpress vga_controller bus_master cap_list rom fb
       configuração: depth=32 driver=nvidia latency=0 mode=1920x1080 resolution=1920,1080 visual=truecolor xres=1920 yres=1080
       recursos: memória de E/S:600-5ff memória de E/S:620-61f irq:189 memória:74000000-74ffffff memória:6000000000-61ffffffff memória:6200000000-6201ffffff porta de E/S:4000(tamanho=128) memória:75080000-750fffff
  *-display
       descrição: VGA compatible controller
       produto: Intel Corporation
       fabricante: Intel Corporation
       ID físico: 2
       informações do barramento: pci@0000:00:02.0
       nome lógico: /dev/fb0
       versão: 04
       largura: 64 bits
       clock: 33MHz
       capacidades: pciexpress msi pm vga_controller bus_master cap_list rom fb
       configuração: depth=32 driver=i915 latency=0 resolution=1920,1080
       recursos: memória de E/S:620-61f memória de E/S:400-3ff irq:154 memória:6204000000-6204ffffff memória:4000000000-400fffffff porta de E/S:5000(tamanho=64) memória:c0000-dffff memória:4010000000-4016ffffff memória:4020000000-40ffffffff


uname -r
6.8.0-58-generic

nvidia-smi 
Mon Apr 28 10:54:19 2025       
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 570.124.04             Driver Version: 570.124.04     CUDA Version: 12.8     |
|-----------------------------------------+------------------------+----------------------+
| GPU  Name                 Persistence-M | Bus-Id          Disp.A | Volatile Uncorr. ECC |
| Fan  Temp   Perf          Pwr:Usage/Cap |           Memory-Usage | GPU-Util  Compute M. |
|                                         |                        |               MIG M. |
|=========================================+========================+======================|
|   0  NVIDIA GeForce RTX 3050 ...    Off |   00000000:01:00.0  On |                  N/A |
| N/A   53C    P8              4W /   80W |      64MiB /   6144MiB |      0%      Default |
|                                         |                        |                  N/A |
+-----------------------------------------+------------------------+----------------------+
                                                                                         
+-----------------------------------------------------------------------------------------+
| Processes:                                                                              |
|  GPU   GI   CI              PID   Type   Process name                        GPU Memory |
|        ID   ID                                                               Usage      |
|=========================================================================================|
|    0   N/A  N/A            1391      G   /usr/lib/xorg/Xorg                       45MiB |
+-----------------------------------------------------------------------------------------+
2

Try log into xorg if you're on Wayland.

1 Like
3

I'm already using xorg :smiling_face_with_tear:

1 Like
4

There may be something in the Nvidia driver that prevents nightlight from functioning correctly. I can't recall the options available (as I don't use Nvidia) but I seem to recall this being an issue for other things in the past. You could take a look in that control panel and see if there's anything that might be affecting it.

5

Welcome to the Forum!

Because You are already on Xorg, You could try it with a different Driver. The 550 or the 535 instead of the 570. Or You try it with reinstalling the 570 Driver.

First uninstall the current Driver with the Command:

sudo apt purge nvidia

Then install the Nvidia Driver with the Command:

sudo apt install nvidia-driver-[Version-Number] nvidia-dkms-[Version-Number]

Replace [Version-Number] with the Driver Version that You want (535, 550, 570 or whatever).

6

I came back to give a try to Zorin 18 Core, and the night light works only on the built-in laptop screen.
This is my setup with a Dell G15 3050 laptop:

00:02.0 VGA compatible controller: Intel Corporation Raptor Lake-S UHD Graphics (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation GN20-P0-R-K2 [GeForce RTX 3050 6GB Laptop GPU] (rev a1)

But I finally found a solution at https://askubuntu.com/a/1408202

sudo apt install redshift
redshift -oP -O 4500

Now it works great. I will put it in my .profle to autostart :grinning_face:

Edit: also the gtk interface is great

sudo apt install redshift-gtk

After installing, I had to allow the geolocation in Configuration, privacy. And now it works without command line

1 Like
7

Could you try going into Settings → Color, and toggling off/on the profile for the external monitor? Unfortunately I can't test this myself at the moment, but I did find a few reports of this workaround.

8

I was surprised to see this thread originally in "Customisation", so have moved to "General Help".
That way @edurbs may consider marking his last post as :white_check_mark: Solution.

1 Like