NVIDIA Suspend fix

setup-nvdia-suspend.sh

# Use systemd for managing NVIDIA driver suspend in drivers ====>>> PRIOR to version 470 <<<=====
# https://download.nvidia.com/XFree86/Linux-x86_64/450.66/README/powermanagement.html
# https://forums.developer.nvidia.com/t/unable-to-set-nvidia-kernel-module-parameters/161306
# Please note: In Fedora Linux you may need to just install the xorg-x11-drv-nvidia-power pakage 
# as sugested by @goombah88 in the comments below. 

TMP_PATH=/var/tmp
TMPL_PATH=/usr/share/doc/nvidia-driver-460/

echo "options nvidia NVreg_PreserveVideoMemoryAllocations=1 NVreg_TemporaryFilePath=${TMP_PATH}" | sudo tee /etc/modprobe.d/nvidia-power-management.conf 

sudo install --mode 644 "${TMPL_PATH}/nvidia-suspend.service" /etc/systemd/system
sudo install --mode 644 "${TMPL_PATH}/nvidia-hibernate.service" /etc/systemd/system
sudo install --mode 644 "${TMPL_PATH}/nvidia-resume.service" /etc/systemd/system
sudo install "${TMPL_PATH}/nvidia" /lib/systemd/system-sleep
sudo install "${TMPL_PATH}/nvidia-sleep.sh" /usr/bin

sudo systemctl enable nvidia-suspend.service
sudo systemctl enable nvidia-hibernate.service
sudo systemctl enable nvidia-resume.service

I found solution for my system, tested with nvidia driver 570.153.02.
To get suspend/hibernation working correctly i had to change my kernel version to 6.13.7 and set NVreg_EnableGpuFirmware to 0 for nvidia kernel module.
With other kernel versions(i tested 6.12.29 lts and mainline 6.14.6) i get a black screen when trying to resume from suspend/hibernate¹.

Here is modprobe.d config for nvidia module(/etc/modprobe.d/nvidia.conf):

options nvidia NVreg_PreserveVideoMemoryAllocations=1
options nvidia NVreg_TemporaryFilePath=/var/tmp
options nvidia NVreg_EnableGpuFirmware=0

Enabled nvidia systemd services:

sudo systemctl enable nvidia-hibernate
sudo systemctl enable nvidia-suspend
sudo systemctl enable nvidia-resume

My system:

• Lenovo Legion R7000 AHP9
• AMD Ryzen 7 8745H
• 32 GB ram
• Video: Nvidia RTX 4050(dGPU) + AMD Radeon 780M(iGPU)
• OS: Fedora 41, KDE 6.3.5 with Kwin wayland session
• Nvidia driver version: 570.153.02

Footnotes

1. As workaround I found that with magic SysRq request for SIGTERM to all processes, i can bypass/kill hanged nvidia(?) scripts. Keyboard shortcut: Alt+SysRq(PrtSc)+e ↩

FYI, there's a new systemd service for newer nvidia driver versions. So if someone uses suspend-then-hibernate on their system, you might need to enable that too for nvidia:

sudo systemctl enable nvidia-suspend-then-hibernate.service