Nvidia make suspend work in Linux in Wayland (GNOME)

nvidia-wayland-suspend.txt

Nvidia make suspend work in Linux in Wayland (GNOME) 


MAIN POINT
adding these kernel boot parameters is enough to save vram on nvidia:
________
Boot grub kernel boot parameters: 
 nvidia_drm.modeset=1 nvidia_drm.fbdev=1 nvidia.NVreg_TemporaryFilePath="/var/tmp" nvidia.NVreg_PreserveVideoMemoryAllocations=1 
________

EVERYTHING ELSE below is only about making custom service 
to automatically pause/unpause firefox and gnome desktop to have vram saved correctly


Source:
https://gist.github.com/jstarcher/abdac9c2c0b5de8b073d527870b73a19
https://bbs.archlinux.org/viewtopic.php?pid=2044189#p2044189

additional read section 10
https://wiki.archlinux.org/title/NVIDIA/Tips_and_tricks 

NOTE0 - AFTER DRIVER UPDATE - if you done this instruction
file /etc/modprobe.d/nvidia.conf will be reseted - after driver update just update this file
to content as in this instruction
that all you need to do after driver update

NOTE - NVreg_TemporaryFilePath=/var/tmp free space at location must be larger
than your VRAM size

NOTE2 - script that do killall -STOP firefox and killall -CONT firefox etc is REQUIRED
if you want to "resume" other GPU app like game - you need to manually "pause" it and "resume"
or add process name to script in similar way as others

NOTE3 - LAPTOP
for laptop case where integrated used 
and you do not want to have nvidia running all the time
change to fbdev=0 and modeset=0 in two next sections


________
Edit/create file
/etc/modprobe.d/nvidia.conf

blacklist nouveau
options nvidia_drm modeset=1
options nvidia_drm fbdev=1
options nvidia NVreg_PreserveVideoMemoryAllocations=1 
options nvidia NVreg_TemporaryFilePath=/var/tmp



________
Boot grub kernel boot parameters: 
 nvidia_drm.modeset=1 nvidia_drm.fbdev=1 nvidia.NVreg_TemporaryFilePath="/var/tmp" nvidia.NVreg_PreserveVideoMemoryAllocations=1 
________


________
Edit/create file
/usr/local/bin/suspend-gnome-shell.sh

#!/bin/bash
case "$1" in 
        suspend) 
            killall -STOP chrome
            killall -STOP firefox
            killall -STOP gnome-shell 
            ;;
        resume)
            killall -CONT gnome-shell
            killall -CONT chrome
            killall -CONT firefox
            ;;
esac 




________
Run below:
sudo chmod +x /usr/local/bin/suspend-gnome-shell.sh
________


________
Edit/create file
/etc/systemd/system/gnome-shell-suspend.service

[Unit] 
Description=Suspend gnome-shell 
Before=systemd-suspend.service 
Before=systemd-hibernate.service 
Before=nvidia-suspend.service 
Before=nvidia-hibernate.service  

[Service] 
Type=oneshot 
ExecStart=/usr/local/bin/suspend-gnome-shell.sh suspend  

[Install] 
WantedBy=systemd-suspend.service 
WantedBy=systemd-hibernate.service 



________
Edit/create file
/etc/systemd/system/gnome-shell-resume.service

[Unit] 
Description=Resume gnome-shell 
After=systemd-suspend.service 
After=systemd-hibernate.service 
After=nvidia-resume.service  

[Service] 
Type=oneshot 
ExecStart=/usr/local/bin/suspend-gnome-shell.sh resume  

[Install] 
WantedBy=systemd-suspend.service 
WantedBy=systemd-hibernate.service



________
Run below:
sudo systemctl daemon-reload
sudo systemctl enable gnome-shell-suspend
sudo systemctl enable gnome-shell-resume
________


Reboot


OPTIONAL - to block wakeup from keyboard
or when keyboard broken and wakeup automatically (after every boot)
echo PTXH | sudo tee /proc/acpi/wakeup