ada's blog

some notes about gaming on linux

this is mostly so i don't forget
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I recently migrated to using Linux full time. You need to not look far to find an ocean of reasons why Windows has been a bit miserable.

This post mainly serves as a logbook for fixes and workarounds for making games (and some applications) work on Linux.

Note: This document has a lot of terminal commands and may be unsuitable for screen readers.

Extreme stuttering after 30-60 minutes on Steam

This is apparently due to the recent Steam Game Overlay update which added Game Recording.

You can disable it by prefixing LD_PRELOAD="" to your launch arguments:

LD_PRELOAD="" %command%

More info on the following issue reports:

If you want to load vulkan layers you must add VK_LOADER_LAYERS_ENABLE to your launch arguments:

VK_LOADER_LAYERS_ENABLE="LAYER NAMES" %command%

Replace LAYER NAMES with the layers you wish to load, separated with a comma.

Known Vulkan layer names:

You can view layers present on your system by running vulkaninfo --summary (present in the vulkan-tools package available in every distro worth using.)

Alternate Resolution

According to this comment on ValveSoftware/steam-for-linux#11446, disabling GPU acceleration for web views may also help performance related issues.

You disable GPU Web View Acceleration in the Steam settings.

EAC “Failed to Intialize Dependencies” error

This is likely due to a SDL_VIDEODRIVER and/or SDL_VIDEO_DRIVER environment variable being present.

Try using the following launch arguments:

env --unset=SDL_VIDEODRIVER --unset=SDL_VIDEO_DRIVER %command%

or

env SDL_VIDEODRIVER=windows SDL_VIDEO_DRIVER=windows %command%

Alternatively, set the variable to an empty string in whatever launch manager you’re using (Heroic, Lutris).

The EAC splash also sometimes fails to load if you are using the proprietary AMD drivers (i.e. vk_pro %command%.)

Enabling DX12 Ray Tracing

If you have a ray tracing capable GPU (RTX 2000 or newer, RX 6800 or newer) you might be able to tell Mesa and VKD3D that ray-tracing can be enabled by using the following launch arguments:

env RADV_PERFTEST=rt VKD3D_CONFIG=dxr VKD3D_FEATURE_LEVEL=12_2 %command%

If you have an older GPU you can try:

env RADV_PERFTEST=emulate_rt VKD3D_CONFIG=dxr VKD3D_FEATURE_LEVEL=12_2 %command%

This assumes you have a relatively recent VKD3D and Mesa installation, and the game has to support ray tracing in any capacity (i.e. World of Warcraft, Ratchet and Clank: Rift Apart)

Games not capturing mouse cursor

Some games don’t play nice with mouse capture, an easy way to solve this is by changing the launch arguments to:

gamescope --force-grab-cursor -f -- %command%

You may swap -f with -b for borderless windowed instead of fullscreen.

Gamescope exiting early due to short-lived launcher processes

Some games launch via third party launchers that cause gamescope to exit before the wine device.

This may be solved by forcing the SDL backend.

gamescope --backend sdl -- %command%

Gamescope resolution being fixed to the first window size under SDL

Gamescope under SDL has a hard time adjusting to resolution changes (i.e. if you’re using it for launcher processes.), to solve this you must force the window to be fullscreen.

gamescope -w YOUR_RESOLUTION_HERE -h YOUR_RESOLUTION_HERE -r YOUR_REFRESH_RATE_HERE --backend sdl --force-windows-fullscreen -f -- %command%

(Special thanks to Hollyrious for helping me diagnose this!)

Gamescope and Steam

Gamescope might break steam ingration or just exit, in that case add -e to the end of your command. Also ensure that -- (with spaces) exists before %command%

Windows-only Third-Party Mod Tooling on Steam

You can add the mod tools as a non-steam game, given it has a GUI.

When you do, force it to use the same compatability tools as the game and set the launch arguments to:

env STEAM_COMPAT_DATA_PATH="~/.steam/root/steamapps/compatdata/489830" %command%

You may need to install more dependencies like .NET 4.8/6.0, etc via protontricks, select the game not the non-steam app when installing.

Change ~/.steam/root/steamapps to the SteamLibrary steamapps folder if installed in a steam library folder.

Change 489830 to match the steam id of the mod tool the game is for, 489830 is Skyrim SE/AE. It is the number after /app/ in the Steam store link, alternatively look it up on SteamDB.

SteamVR / Monado

SteamVR and VR in general on Linux is not good, however it is possible. Your experience will be extremely improved if you have a Valve Index. Any other headset is unsupported and SteamVR will assume it just to be an Index (or not detect it at all.) To remedy this, you can use Monado.

If you run a system that does not have pkexec set up with a GUI (or at all,) you have to manually run setcap (as root)

setcap CAP_SYS_NICE=eip ~/.steam/steam/steamapps/common/SteamVR/bin/linux64/vrcompositor-launcher

If you plan on running monado as-is outside of SteamVR, you have to do the same for Monado.

setcap CAP_SYS_NICE=eip /usr/bin/monado-service

You may also have to use the vrmonitor directly in the command:

~/.steam/steam/steamapps/common/SteamVR/bin/vrmonitor.sh %command%

AMDGPU

AMD does not ship the required Vulkan extensions that Monado needs in the FOSS driver present in the Linux kernel. You need to use the proprietary AMDGPU Radeon drivers and launch SteamVR as follows:

vk_pro ~/.steam/steam/steamapps/common/SteamVR/bin/vrmonitor.sh %command%

WMR

Windows Mixed Reality is deprecated by Microsoft, and support will be removed in November 2026. This makes Monado on Linux the only way to still use

However getting it to work is non-trivial. WMR supports needs a hidden dependency, Basalt. Specifically a fork of Basalt.

My command looks something like:

env VIT_SYSTEM_LIBRARY_PATH=/usr/lib64/libbasalt-monado.so PRESSURE_VESSEL_FILESYSTEMS_RW=$XDG_RUNTIME_DIR/monado_comp_ipc SLAM_CONFIG=/usr/share/basalt/msdmo.toml SLAM_SUBMIT_FROM_START=1 SLAM_UI=0 XRT_COMPOSITOR_COMPUTE=1 XRT_DEBUG_GUI=0 AEG_USE_DYNAMIC_RANGE=0 WMR_AUTOEXPOSURE=0 STEAMVR_EMULATE_INDEX_CONTROLLER=0 ~/.steam/steam/steamapps/common/SteamVR/bin/vrmonitor.sh %command%

Keep in mind you need to replace %command% with the AMDGPU section if applicable, and adjust the VIT_SYSTEM_LIBRARY_PATH and SLAM_CONFIG path.

“Headset Off” when calibrating

Instruct Monado to emulate the Index Controlller. This might magically fix it. It did for me.

Failing that follow the instructions laid out by the Linux VR Adventures Wiki.

Game-Specific Fixes

Dauntless

This game has quite a lot of issues with Wine and Proton.

If you randomly crash, it might be because of stack smashing due to a race condition.

I have managed to reduce the frequency of crashes by limiting how many resources the game can use.

env DXVK_CONFIG="dxvk.numCompilerThreads=1" WINE_CPU_TOPOLOGY="4:0,2,4,6" %command%

If there is too much lag from the above fix.

You might want to redefine the CPU topology, i.e. WINE_CPU_TOPOLOGY="8:0,1,2,3,4,5,6,7"

If you get a “Game Security Integrity Violation” error from EAC.

Set the SteamDeck environment variable:

env SteamDeck=1 %command%

If you get a “Hash Catalog Not found” error from EAC.

Copy EasyAntiCheat from the game’s install directory to the Archon/Binaries/Win64 sub-directory.

If you get what seems to be a test card instead of the opening video

Try using Proton Experimental or a different version of Proton.

Horizon Zero Dawn: Remastered

If you crash upon start, and have multiple displays it’s likely due ot mismatched display resolutions.

This can be solved by using gamescope:

gamescope -w YOUR_RESOLUTION_HERE -h YOUR_RESOLUTION_HERE -r YOUR_REFRESH_RATE_HERE --backend sdl --force-windows-fullscreen -f %command%

If the game complains about “no internet connection” upon start: add

%command% -showlinkingqr

to the command options.

Bloodborne (via shadPS4 with patches)

If you load in to the game and the world geometry is missing/textures are horrid, it’s likely because the GPU drivers lack a certain extension set. In my experience running shadPS4 with AMD’s proprietary drivers (i.e. vk_pro shadps4) resolves this.

If you start the game to a black screen follow the steps outlined in this github issue.

If you still get a black screen, delete the shadPS4 folder in .local/share/shadPS4 and launch the Qt6 GUI and configure your settings and launch the game via the GUI. (I have no idea why this works.)

Marvel Rivals / AFK Journey

Some games display a terms of service or login web view modal on the first launch, however the input window may be detatched from the renderer frame.

If you use a tiled window manager and see a black square, this is the input frame.

If you do not see a black square but the web view is not accepting inputs, the black square is likely beneath this window.

Locate both frames and approximate the button locations using the render frame on the black frame.

AMDGPU-Pro

Gamescope

AMD’s proprietary drivers does not implement an extension that Gamescope relies on, which results in Gamescope crashing (See this issue on GameScope’s repository.)

You can avoid this by moving the amd_pro_icd64.json file (/usr/share/vulkan/icd.d/amd_pro_icd64.json) to a different path (i.e. /usr/share/vulkan/icd.disabled/amd_pro_icd64.json)

And then modifying your vk_pro wrapper script to point to the new path. When needed, prefix vk_pro to whatever command needs proprietary AMD drivers.

You can find vk_pro and vk_radv wrapper scripts provided by Gentoo, but they likely are also provided by other distros.

Gamescope seems to ignore the VK_DRIVER_FILES, VK_ICD_FILENAMES, VK_LOADER_DRIVERS_DISABLE, and VK_LOADER_DRIVERS_SELECT environment variables.

Generic Notes

Checking if EAC is linux-enabled

Most EAC games ship with a Settings.json file, this tells the EAC runtime what deployment and product to use. This information is all logged in AppData, but the settings file exists in the game installation. This is usually next to the installer (EasyAntiCheat/Settings.json, or next to the game executable but usually in the EasyAntiCheat folder inside of the game folder)

We can use this to find out if EAC is enabled for a particular game.

jq -r \
    '@uri "https://modules-cdn.eac-prod.on.epicgames.com/modules/\(.productid)/\(.deploymentid)/linux64"' \
    Settings.json

This will print out a URL. If the url yields HTTP 403, EAC Linux is disabled. If it returns HTTP 200, it is enabled.

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