Go, Go, Godot!
  • 0

Launching Godot Games on Steam Deck from the command line via Remote Shell

August 2, 2022

For some reason, my Godot game would no longer launch on the Steam Deck. I could hear it running as if it were running in the background, but the screen kept showing the Steam Deck’s UI.

Since it’s all Linux I figured it should be possible to just drop to the command line and launch a game from there. Linux typically uses the DISPLAY environment variable to tell the application where its output should be shown. And it turns out, it worked exactly as expected.

In the Steam Devkit Management Tool, there’s a Remote Shell button.

Once the shell is launched, I was curious about the OS:

Last login: Sun Jul 31 13:40:30 2022 from 10.10.1.10
(deck@steamdeck ~)$ uname -a
Linux steamdeck 5.13.0-valve15-1-neptune-02197-gf6ec7ad3762a #1 SMP PREEMPT Thu, 26 May 2022 19:57:25 +0000 x86_64 GNU/Linux

The location where Steam keeps its games is somewhat hidden:

(deck@steamdeck ~)$ ls /home/deck/.local/share/Steam/steamapps/common/
 Age2HD                   RiME
'BattleBlock Theater'     RimWorld
 Carrion                  rocketleague
 Control                 'Sea of Thieves'
'Deep Rock Galactic'     "Sid Meier's Civilization V"
'Disco Elysium'          'Skyrim Special Edition'
"Don't Starve Together"  'Stardew Valley'
'Elite Dangerous'        'Steam Controller Configs'
'Fable Anniversary'       Steam.dll
 Factorio                 SteamLinuxRuntime
'Fury Unleashed'          SteamLinuxRuntime_soldier
'Neon Abyss'             'Steamworks Shared'
 Outward                  StickFightTheGame
'Proton 7.0'             'Super Meat Boy'
'Proton - Experimental'   Terraria
 RBS                      Valheim
'Red Dead Redemption 2'

But a devkit game won’t be found there. It’s in the “devkit-game” directory instead:

(deck@steamdeck ~)$ ls ./devkit-game/
arpg            arpg_game            arpg_game-settings.json  devkit-steam
arpg-argv.json  arpg_game-argv.json  arpg-settings.json

To run a game, go to the devkit directory where your game is and run it from the command line:

(deck@steamdeck ~)$ ./devkit-game/arpg/arpg.x86_64
Godot Engine v4.0.alpha12.official.2c11e6d9e - https://godotengine.org
ERROR: X11 Display is not available
   at: DisplayServerX11 (platform/linuxbsd/display_server_x11.cpp:4612)

(zenity:29986): Gtk-WARNING **: 10:56:25.372: cannot open display:
ERROR: Unable to create DisplayServer, all display drivers failed.
   at: setup2 (main/main.cpp:1715)
ERROR: BUG: Unreferenced static string to 0: interface_added
   at: unref (core/string/string_name.cpp:131)

In Linux, output goes to the device specified via the DISPLAY env var. When connecting to the Steam Deck via shell, that is missing, hence the error.

Let’s run it again, with the DISPLAY environment variable set to the first device:

(deck@steamdeck arpg)$ DISPLAY=:0.0 ./arpg.x86_64
Godot Engine v4.0.alpha12.official.2c11e6d9e - https://godotengine.org
Vulkan API 1.2.203 - Using Vulkan Device #0: AMD - AMD RADV VANGOGH

And it’s running. Launching games via the command line works well, and this may be great for debugging slightly more complex issues during launch, especially when attaching a debugger, or even when passing arguments to trigger specific scenarios on an actual device.

We can take this up to another level. How about sharing your PC’s mouse and keyboard with the Steam Deck? Let’s go.

developer experiencegodotSteam Deck
Posted in Godot, Steam.
Share
PreviousShare your Computer’s Mouse and Keyboard with your Steam Deck
NextGodot Engine on the Steam Deck – Developing games on the go?

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Related Posts

  • Godot Game Engine Logo
    March 1, 2023

    Godot Engine 4.0 released!

    Godot Engine 4.0 has been released per official announcement. With version 4.0, Godot has gone through “3+ years of breaking and rebuilding from the ground up, a complete core overhaul and a full engine rewrite, through 17 alphas, 17 betas and 6 release candidates“. The announcement post is credited to “2000+ Godot contributors.” It’s a …

  • July 6, 2023

    Making breakable objects in Godot

    Here’s a tutorial on how to create breakable objects in Blender and Godot. It covers the steps needed to design and implement breakable objects, including scripting and using physics properties to make objects break apart into smaller pieces upon collision or other interactions.

  • July 30, 2024

    Inventory System v1.15 available

    This inventory system release refines a lot of architecture guide sections based on customer feedback and adds over 100 additional pages to the PDF guide. Features: Bug fixes:

  • April 1, 2023

    Introducing GodotBuilder: Custom Export Templates built on demand

    Need optimized export templates with PCK encryption support but don’t want to have to set up a build pipeline or download the entire compilation toolchain on your computer? Well, now it is. Fill out the form, checkout, and we’ll email you the download link after the compilation completes. Compilation may take 30 minutes to 3 …

    © 2025 GoGoGodot.io. All rights reserved.