
Installing and managing Proton GE on the Steam Deck is straightforward thanks to ProtonUp-Qt, a graphical manager available directly in KDE Discover.
1.Switch to Desktop Mode:Requires restarting into KDE Plasma desktop.
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Press the STEAM button on your Deck (or press the physical Power button).
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Select Power from the menu.
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Choose Switch to Desktop.
2.Install ProtonUp-Qt from Discover:Ensure your Steam Deck is connected to Wi-Fi.
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Click the blue shopping bag icon in the bottom taskbar to open the Discover Software Center.
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Click the search bar in the top-left corner and type
ProtonUp-Qt. -
Select ProtonUp-Qt from the search results and click Install.
3.Download the Latest Proton GE Release:
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Launch ProtonUp-Qt from your Application Menu (under Utilities or Games) or directly from Discover.
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Ensure Steam is selected under the Install for dropdown at the top.
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Click the Add version button at the bottom.
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Set Tool to
Proton-GE(the top option). -
In the Version dropdown, select the newest release (e.g.,
GE-Proton9-XX) and click Install.
4.Assign Proton GE to Your Games in Gaming Mode:
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Double-click the Return to Gaming Mode shortcut on the desktop.
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In Gaming Mode, select the game you wish to fix or test.
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Click the Gear icon (Settings) on the right side of the game page and select Properties.
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Navigate to the Compatibility tab.
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Check Force the use of a specific Steam Play compatibility tool.
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Select the newly installed GE-Proton build from the dropdown list.
How to Update or Remove Proton GE
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Updating: Proton GE builds do not overwrite previous versions; each release installs as a separate compatibility layer. To update, open ProtonUp-Qt in Desktop Mode, click Add version, and select the newest GE release.
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Cleaning Up Old Versions: Over time, old Proton GE builds can take up several gigabytes of space. To remove an outdated build, open ProtonUp-Qt, highlight the version you no longer use, and click Remove selected.
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