This may not be a Linux specific problem as I had the exact same issue earlier with Windows 7 and it's one of the reasons I installed Linux in the first place.
The specific game I'm trying to play is DayZ but it may not be issue specific to this game. It worked flawlessly untill this point. I had made no changes to anything. Basically when I try to launch the game it starts loading up normally and then just apparently quits and the "Play" button goes back green. No error, no black screen, no freezing or anything. It just stops launching the game.
I've tried checking the integrity of files, deleting downloads catche, disabling steam cloud, removing launch options.. nothing. Almost like it gets blocked by firewall or something. However I feel like it may be an issue with steam itself or then it's a hardware issue (I've got really old PC)
Few things I've noticed that may or may not be related:
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When opening up steam it almost always used to download some updates first and check the integrity of them or something. Now it doesn't. It just opens up Steam. When I click "check for updates" it says everything is up to date.
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The firmware updater shows available updates for my SSD and HDD but no option to update. I also tried with
sudo fwupdmgr get-devicesbut it says "UEFI firmware can not be updated in legacy BIOS mode See https://github.com/fwupd/fwupd/wiki/PluginFlag:legacy-bios for more information."
- In the privacy settings it says "checks failed" and gives me this message:
- I've tried reinstalling Proton BattlEye Runtime but it wont let me uninstall it and says "missing shared content"
Interestingly that file doesn't seem to be located in the location you mentioned but rather: home/snap/steam/common/.steam/steamapps/steam/comptdata
There is no steam folder at "share"
I'll try deleting that anyways. I'll report back in a moment
EDIT: Nope, nothing.
The logs say error on Vulkan, make sure your GPU is running with the correct drivers. If it's a Vulkan thing old native games that use OpenGL should work, I think Team Fortress 2 is OpenGL but I'm not entirely sure.
I'm sorry I just don't know how to check any of that. These are the GPU drivers I'm using (I think) The game worked just fine for several weeks with these drivers.
You can install
vulkan-tools(ubuntu package name - not sure if it's the same for your distro) and runningvkcube. It's a simple vulkan app that will display a rotating cube using vulkan. It will also spit out the GPU that it's running on.If it reports your nvidia card and the cube looks good then your drivers may be fine and the issue is with Steam and/or this application specifically. If not then there's an issue with your drivers.
Occasionally when I've had a kernel update or something the nvidia drivers have gotten borked. Removing, re-installing, and rebooting has helped. Something like this: