MysticBytes786 / hyprland-suspend-fix

Fix for Hyprland crash on wake-up with NVIDIA GPUs

This solution aims to resolve the issue where Hyprland crashes when waking up on systems with an NVIDIA GPU

the problem

Hyprland is attempting to communicate with the NVIDIA driver after it has already entered suspend mode, so it cannot respond. Linux tries to freeze the task but fails because Hyprland is waiting for a response from the driver and cannot be frozen.

the solution

The solution is to manually suspend Hyprland using the "STOP" signal before the NVIDIA driver goes into suspend mode. Then use the "CONT" signal upon resuming.

Solution Overview

The solution involves the following steps:

1. Create a script suspend-hyprland.sh to suspend and resume Hyprland.

2. Create systemd services hyprland-suspend.service and hyprland-resume.service to manage the suspension and resumption of Hyprland.

3. Reload the systemd daemon and enable the newly created services.

   *** Click here for a script that automates the steps ***

---

Step 1: Create the script

Create a script suspend-hyprland.sh:

#!/bin/bash

case "$1" in
    suspend)
        killall -STOP Hyprland
        ;;
    resume)
        killall -CONT Hyprland
        ;;
esac

Step 2: Create the systemd services

Create a systemd service hyprland-suspend.service:

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

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

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

Create a systemd service hyprland-resume.service:

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

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

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

Step 3: Reload the systemd daemon and enable the newly created services

sudo systemctl daemon-reload

sudo systemctl enable hyprland-suspend.service

sudo systemctl enable hyprland-resume.service