I was struggling with Nvidia driver a lot on my Arch Linux setup, but I’ve finally resolved most of the problems.

Basically I had those problems:

1. Sleep didn’t work. I was getting black screen most of the time after trying to wake up the machine.
2. HDR was working, but colors were washed out.
3. HDMI 2.1 didn’t work either. OS was losing monitor signal for some reason.

I’ve resolved all the problems after release of the new 565.57.01 beta driver which is already available in extra-testing repo.

Key points

• Those points are applicable only for default linux core, other may require additional tuning.
• Since 560.35.03-5 you don’t set kernel parameters to use driver. Both nvidia_drm.modeset and nvidia_drm.fbdev are enabled by default, you can remove.
• nvidia-suspend.service is disabled by default while Arch wiki says it’s should be enabled by default. Same with nvidia-hibernate.service. Please check the status and enable it, e.g. systemctl enable nvidia-suspend.service.
• nvidia-resume.service is also disabled by default, but you need to enable it only under GDM.
• Without those services your GPU will be unable to use deep S3 sleep and hibernation.
• You don’t need to manually enable NVreg_PreserveVideoMemoryAllocations=1 and NVreg_TemporaryFilePath=/var/tmp modprobe options. They are already enabled by default.
• HDR was completely disabled for Nvidia GPUs in KDE Plasma 6.2 due to bug. You need to re-enable it manually using KWIN_DRM_ALLOW_NVIDIA_COLORSPACE=1 environment variable, e.g. adding it to /etc/environment and re-logging.
• You need to use version 565 and higher if your colors are washed out and pale after enabling it (you will notice it if they are, believe me).
• SDDM launched under X11 for some reason broke HDMI 2.1 in my case. Switching to Wayland solved the problem. As a nice bonus I also now have HDR enabled in SDDM because it now matches the Plasma configuration.

Summary

• You don’t need to enable most of the options by hand, it’s now enabled by default.
• You still need to enable nvidia-suspend (and nvidia-hibernate if you use hibernation) for sleep to work.
• You need to re-enable HDR in KDE Plasma using environment variable.
• Switch SDDM to Wayland if you have problems with HDMI 2.1.

Update from 21.11.2024

Unfortunately it didn’t resolve sleep/suspend problems completely. You also need Linux 6.12, it contains additional suspend patch.

However, I noticed another issue: nvidia-open suffers from occasional stuttering and various lags across OS interface: scrolling browser, moving windows, etc. Those symptoms disappear if GPU is under some kind of constant load: video recoding, large video decoding, gaming, etc. Unfortunately there is no fix for this, because bug is in GSP firmware which cannot be disabled in open modules. You can switch to proprietary nvidia and disable GSP using modprobe option:

options nvidia NVreg_EnableGpuFirmware=0