hyprfreeze - Pause a game process (or any other process) in Hyprland

Pause and resume game/program process in Hyprland. Contribute to Zerodya/hyprfreeze development by creating an account on GitHub.

Hey all! If you do any gaming on Hyprland, you might be interested in hyprfreeze.

It's a very simple bash script I made to "freeze" a game process (or any other process) in Hyprland, which you may find useful to:

Should just work^^TM in most scenarios but my testings can only go so far and any feedback would be very appreciated.

9 comments

Does this mean I can pause online games?

/s

/us I'm assuming this is like pressing Ctrl+Z in a Terminal window, and then fg to unpause.
- Haha, yes! Ctrl+Z sends a TSPT signal to a terminal process, while this script sends a STOP signal to every process in a game's process tree. Both get resumed with a SIGCONT so they're kinda similar.
Does it work on Wayland compositors that aren't hyprland?
- No, it uses hyprctl to get the pid of the current active window. Which compositor are you using? It might be possible to get the pid in a different way.
  
  Qtile and mutter, I have 2 computers
That's cool! Do you know about any similar solution for KDE Plasma/Kwin by any chance? Also, would it be theoretically possible to save the process to some kind of swapfile on disk so it doesn't take up space in RAM?
- There is Nyrna, but it doesn't work on Wayland.
  
  Afaik saving to swap isn't possible as it's something managed by the kernel, although you can try tweaking cgroups. Nyrna also mentions that this isn't currently possible.
Pretty simple and elegant solution. Nice job!

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