this post was submitted on 01 Aug 2025
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Games no longer launching with same gamescope command (lemmy.zip)
submitted 23 hours ago* (last edited 21 hours ago) by Blxter@lemmy.zip to c/linux_gaming@lemmy.world
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My normal command is

gamescope -f -W 2560 -H 1440 -r 144 --force-grab-cursor --mangoapp -- %command%

and games would work just fine. as of yesterday or so games would no longer launch no matter the game. If I remove gamescope it launches fine. I would Like to keep using gamescope but I did some research and apparently there used to be problems with NVIDIA and gamescope. I have used gamescope for many many games with no issues till now

I originally tried on my Endeavour OS install that I have been using for some time but then since I have been meaning to try out cachyos I then tried same thing there and it still does not work with gamescope. I have looked through the proton logs but if im being honest no idea what im looking for. Any help would be appreciated :)

  • GPU: NVIDIA GeForce RTX 3080
  • NVIDIA driver 575.64.05
  • OS: CachyOS x86_64

Edit: I have tried proton versions

  • Experimental
  • Experimental bleeding edge
  • 9.0-4
  • 10.0-2 (beta)
  • proton-CachyOS (native package)

Edit: pastebin for steam + games https://pastebin.com/4Rs7mHhi opening Mass effect https://pastebin.com/0NuUr6qd

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[–] Blxter@lemmy.zip 1 points 17 hours ago

The biggest reason why I wish to keep using gamescope at the moment is because I have an external capture card I use. My main monitor is 1440P I wish to render in 1440P but the capture card when I set to replicate my main (and only monitor besides capture card) it for some reason forces all games to render in 4k and if I try to change it it just breaks and is no longer full screen and notifications (steam and such) pop up in the middle of the screen. If there is another way to do this would love to know gamescope is just how I 'solved' it myself.