this post was submitted on 25 Apr 2025
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Games freezing when alt-tabbing. Where do I even being debugging? (lemmy.ml)
submitted 1 day ago by Kelbesq@lemmy.ml to c/linux_gaming@lemmy.world
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I've had a problem in several games, and I don't really no where to to being debugging it. It's not like there is any error message. Is it my DE? my distro? drivers? proton? the game engine itself?

I've done some basic web searches, and all of the answers are hyper specific, or "alt-tab just breaks some times".

The actual problem: When I alt-tab, some games will appear to freeze when I tab back in. I've noticed that while I am holding alt-tab and have a non-game window selected, the game is not frozen. As long as have not selected the window I am trying to swap to, it keeps running. It's almost as if the game has inverted it's internal state of whether it's in the foreground are not.

(if it does matter, I am using Gnome on 22.04 PopOS, Nvidia 565 driver, Steam/Proton).

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[–] Max_P@lemmy.max-p.me 2 points 12 hours ago

Not an explanation or proper fix, but running the games through Gamescope might fix it by side effect. In gamescope the game would never lose focus and so shouldn't have problems resuming afterwards.