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Steam

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Last updated at Posted at 2026-05-10

インストール

#sudo dpkg --add-architecture i386
#sudo apt update
#sudo apt install mesa-vulkan-drivers mesa-vulkan-drivers:i386
#sudo apt install flatpak
#flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

flatpak update
flatpak install flathub com.valvesoftware.Steam
# flatpak run com.valvesoftware.Steam

flatpak install flathub com.github.tchx84.Flatseal
flatpak run com.github.tchx84.Flatseal
# → steamのGPUアクセラレーションを有効化

flatpak install flathub org.freedesktop.Platform.VulkanLayer.MangoHud
# 対象ゲームを右クリック
# → 「プロパティ」
# → 「一般」
# → 「起動オプション」
# mangohud %command%

flatpak install flathub net.davidotek.pupgui2
flatpak run flathub net.davidotek.pupgui2
# Steam flatpakにAdd versionで"GE-Proton"の最新版をインストール
# ゲーム右クリック
# → プロパティ
# → 互換性
# → 特定のSteam Play互換ツールを使用する

sudo apt install vulkan-tools
sudo apt install steam-devices
sudo udevadm control --reload-rules
sudo udevadm trigger

既にインストールされているか確認

flatpak list | grep -i steam
snap list | grep steam
sudo snap remove steam

vulkanドライバがインストールされているか確認

dpkg -l | grep mesa-vulkan-drivers

i386アーキテクチャがインストールされているか?

dpkg --print-foreign-architectures
i386

ドライバ正常状態確認

lspci -k | grep -EA3 'VGA|3D|Display'

vulkanの状態を確認

vulkaninfo --summary
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