Steam Deck Desktop Mode is a full Linux desktop (KDE Plasma) running on the same device, and the most useful things to do with it are installing apps through the Discover store, adding non-Steam games, and managing files. Hold the power button, pick Switch to Desktop, and you get a normal windowed environment where you can use a mouse, keyboard, and external display.
This guide covers the practical tips that make Desktop Mode worth using: input setup, installing software safely, adding games from other stores, file transfers, and what to avoid. SteamOS updates change details over time, so check Valve’s current support pages if a menu or command differs from what is described here.
Getting In and Getting Comfortable
Switching Modes
Press the Steam button, open the Power menu, and choose Switch to Desktop. To return, use the Return to Gaming Mode shortcut on the desktop. Game Mode and Desktop Mode share the same Steam library and storage.
Controls Without a Mouse
The trackpads act as a mouse by default in Desktop Mode: the right pad moves the cursor and triggers act as clicks. The on-screen keyboard appears with the Steam button plus X. For long sessions, a Bluetooth or USB keyboard and mouse make the experience far more comfortable.
Docking and External Displays
Connect a dock or USB-C display adapter to use a larger screen. Desktop Mode lets you set display resolution and scaling in the System Settings, which is useful if text looks tiny on a TV or large monitor.
Installing Software the Safe Way
The Discover app store is the intended route. Most apps there come as Flatpak packages, which are sandboxed and survive system updates.
- Game launchers and tools: look for non-Steam launchers and compatibility managers in Discover.
- Browsers, media players, and office tools: install them from the same store.
- Proton tooling: community utilities let you install alternative compatibility layers for specific games.
The system partition is read-only by default, and SteamOS updates can overwrite changes made to it. You can unlock it, but doing so is for advanced users only and may break after updates, so stay with Flatpaks unless you know what you are doing.
Useful Things to Do in Desktop Mode
Add Non-Steam Games
Open Steam in Desktop Mode, choose Add a Non-Steam Game, and select an installed program. After that the title appears in your Game Mode library and can use Proton settings. Launchers for other stores can be added the same way.
Manage Files and Storage
The Dolphin file manager gives you full access to the internal drive and microSD card. Use it to move screenshots, save backups, and mod files. Format SD cards from Game Mode settings to avoid partition mistakes.
Apply Mods and Save Edits
Many games store settings under the compatibility data folder inside the Steam library. Look up the game’s folder path before editing, and keep a copy of any file you change.
Use Streaming and Remote Play
Desktop Mode can run streaming clients that connect to a gaming PC on your network. Check the client’s documentation for controller and resolution settings.
Customize the Experience
Community tools can add overlays, performance monitors, and theme changes inside Game Mode, and some are installed from Desktop Mode. They are third-party software, so read each project’s instructions and source before installing.
Using the Deck as a Small Desktop PC
Desktop Mode turns the handheld into a capable everyday computer when you connect peripherals. Plug a USB-C dock into the port on the bottom, then attach a monitor, keyboard, mouse, and wired network if you like.
Productivity Basics
A web browser, an office suite, and a PDF reader are all available as Flatpaks. The screen is small, so a larger display makes a noticeable difference for anything beyond light browsing.
Screenshots and Recording
Steam captures screenshots in Game Mode, and the desktop includes a screenshot tool as well. Files are saved to folders you can browse from the file manager, which makes sharing them easy.
Remote Access to Other Computers
You can use remote desktop clients and file transfer tools to reach a home PC. This is handy for copying save files or controlling a media server from the couch.
Setting Up Other Game Stores
Desktop Mode is also where you bring in games from outside Steam. The general pattern is the same for each store: install a launcher, sign in, install the game, then add the launcher or game to Steam so it shows in Game Mode.
Open-Source Launchers
Community launchers such as Heroic and Lutris handle several storefronts and are available from Discover or as Flatpaks. They manage Proton or Wine versions per game, so you can switch compatibility layers if a title misbehaves.
Emulation
Emulator frontends and setup tools exist for older consoles, and the Deck’s hardware handles many of them well. Use only games and system files you legally own, and check the emulator project’s documentation for the current setup steps.
Controller Layouts
Once a non-Steam game is added, open its controller settings in Steam to pick a layout. Community layouts can map gamepad inputs to keyboard and mouse controls for titles that expect them.
Compatibility Layers
Steam lets you force a specific Proton version for a game in its properties. If a game fails on the default version, trying a newer or older one is a quick fix before you dig deeper. Community-built Proton variants add patches for particular games and are installed with helper utilities.
Keeping the Deck Healthy
- Storage: check free space on the internal drive and the card from the storage settings, and uninstall games you no longer play.
- Updates: run system updates from Game Mode, and update Flatpak apps from Discover on a regular schedule.
- Backups: Steam Cloud covers many saves, but non-Steam games often store progress locally, so copy those folders from time to time.
- Power: shut down background apps in Desktop Mode before returning to Game Mode so they do not drain the battery.
If something stops working after a major update, check Valve’s community pages and the project pages for the tools you installed, since third-party tools sometimes lag behind new system versions.
Tips by Situation
| Goal | What to use | Caution |
|---|---|---|
| Install an app | Discover (Flatpak) | Pick well-known publishers |
| Play a non-Steam game | Add as non-Steam game, set Proton version | Some titles need extra configuration |
| Copy files | Dolphin, USB drive, or network share | Back up saves before changes |
| Use a terminal | Konsole | Avoid commands you do not understand |
| Tweak system files | Read-only unlock (advanced) | Updates may erase changes |
Who Benefits Most
Players With Games Outside Steam
If you use other storefronts, Desktop Mode is where you install and add those launchers so they appear in Game Mode.
Players Who Want a Small PC
With a dock, keyboard, and monitor, the handheld doubles as a lightweight computer for browsing and documents.
Players Who Mod Games
Mod managers and file access matter here. Desktop Mode gives you the tools without leaving the device.
Players Who Want Zero Maintenance
If you only play Steam games, you can skip Desktop Mode almost entirely. Updates and downloads work from Game Mode.
Common Mistakes
- Unlocking the read-only system partition and installing packages that vanish or break after an update.
- Formatting an SD card from the desktop and picking the wrong device.
- Leaving the device in Desktop Mode on battery, where background apps use more power than Game Mode.
- Installing unknown scripts from forums without reading what they do.
- Editing game files without keeping a backup copy.
Before You Start
- Charge the battery or connect the charger.
- Set a password for the user account if you plan to use administrator functions.
- Back up game saves you care about.
- Plan to install apps through Discover or Flatpak first.
- Connect a keyboard and mouse if you expect to type a lot.
Related guides
- Aio Liquid Coolers For High Performance Gaming
- Wireless Gaming Headsets Under 100 For Pc
- Ssds For Large Video And Raw Photo Files
Frequently Asked Questions
How do I switch to Desktop Mode on Steam Deck?
Press the Steam button, open the Power menu, and choose Switch to Desktop. To go back, use the Return to Gaming Mode icon on the desktop.
Can I install Windows programs in Desktop Mode?
Some run through Proton or a compatibility tool, and results vary by program. Check community reports for the specific software before you rely on it.
Will Desktop Mode void my warranty?
Using the built-in Desktop Mode is part of normal operation. Hardware modifications are a separate matter, so read Valve’s current warranty terms before changing anything physical.
Why did my installed app disappear after an update?
Changes to the read-only system partition can be overwritten. Flatpak apps and files in your home folder generally persist.
