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

nil change, interestingly NVreg_UseKernelSuspendNotifiers=0 won't change the loaded value for me

$ uname -r
7.0.12-arch1-1

$ nvidia-smi --version
NVIDIA-SMI version  : 610.43.02
NVML version        : 610.43

$ bootctl
...
   Secure Boot: disabled

$  systemctl is-enabled nvidia-suspend.service nvidia-hibernate.service nvidia-resume.service
enabled
enabled
enabled

$ cat /etc/modprobe.d/nvidia.conf 
options nvidia NVreg_PreserveVideoMemoryAllocations=1 
options nvidia NVreg_TemporaryFilePath=/var/tmp
options nvidia NVreg_UseKernelSuspendNotifiers=0

$ sort /proc/driver/nvidia/params | grep -iE 'Preserve|Kernel|Temp'
PreserveVideoMemoryAllocations: 1
TemporaryFilePath: "/var/tmp"
UseKernelSuspendNotifiers: 1