Note: This update is for the Steam Deck Beta and Preview channels, and includes new features that are still being tested. You can opt into this in Settings > System > System Update Channel.

These notes contain all changes since the current stable SteamOS 3.7 release, with the new changes since the previous 3.8.4 Beta noted below

New in 3.8.5

• Fixed a bug on Steam Deck OLED where rebooting would occasionally cause a loss of speaker output until rebooted again

• Further improvements to video memory management on discrete GPU platforms

• Fixed a bug in Desktop Mode causing previously open applications to not be remembered when using the 'Return to Gaming Mode' shortcut to logout

• Fixed a regression from previous 3.8 builds causing controls to misbehave after resuming from suspend on the ASUS ROG Ally

• Even more stability and security updates

General

• Fixed a case where WiFi performance could become degraded until the device was put to sleep or manually reconnected

• Fixed excessive trackpad sensitivity on certain early Steam Deck LCD models

• Initial support for upcoming Steam Machine hardware

• Added support for waking from sleep via connected Steam Controller

• Updated Arch system base

• Updated graphics driver with performance and stability fixes

• Fixed a case where per-app performance settings would intermittently fail to apply when launching a game

• Substantially improved speed of future OS updates on high-speed connections

• Improved support for the screencasts in Game Mode (e.g. OBS/Discord)

• Fixed dropdown menus not appearing in some games

• Improved VRR frame pacing

• Fixed FSR badge remaining off in the performance overlay, even if it was actually active

• Improved support for games that attempt to open PDF files in external viewers

• Added missing graphics features needed for titles such as "Crimson Desert"

• Fixed an issue affecting certain titles (such as "SpongeBob SquarePants: Titans of the Tide") where the game window could have an incorrect position

• Fixed closing certain titles (such as "STAR WARS Jedi: Survivor™") and Starfield resulting in a session crash

• Improved support for certain USB racing wheels and USB devices that boot in a non-standard mode

  • Frequently these are devices that appear as USB storage devices with a driver installer, and must be switched to their normal mode by the OS

• Steam Deck controller firmware updates now display update progress on the splash screen

• Fixes issue on specific Steam Deck revisions where firmware updates could render the left controller inoperative for that session

• Fixes for experimental nested desktop mode

• Numerous stability and security updates

Bluetooth

• Re-re-enable Bluetooth Wake for Steam Deck LCD

  • Fix for more spurious wake issues that were present in earlier attempts

Audio

• Detect HDMI channel count and expose surround configuration if available

• Add a setting to allow using Bluetooth headset mics (Bluetooth playback quality will be worse while capture is active)

• Restore internal audio device on reboot if set to "Off" in desktop mode

• Increase suspend timeout for HDMI devices so initial audio isn't cut off after a few seconds of inactivity

• Fixed a bug with switching input devices when a wired headset is plugged in

• Fixed an issue where audio underruns could be experienced after sleep/resume

Accessibility

• Added an option to force mono audio output

Desktop Mode

• KDE Plasma updated to version 6.4.3 from 6.2.5, and now uses wayland by default

  • Fixes several cases of reduced performance in Desktop Mode compared to Game Mode

  • Improved support for rotated displays

  • Better scale factor out of the box on TVs

  • Adds support for external HDR displays

  • Adds support for VRR displays

  • Adds support per-display scale factor

  • For more information, see Plasma release announcements

    • https://kde.org/announcements/plasma/6/6.3.0/

    • https://kde.org/announcements/plasma/6/6.4.0/

• Keyboard layout and language are now obeying Game Mode settings

• Improved windowing behavior for games running in Proton

System Firmware

• Includes Steam Deck LCD BIOS v133

  • Security updates

  • Added "Memory Power Down" setup option

  • Preliminary support for hibernation

• Includes Steam Deck OLED BIOS v114

  • Security updates

  • Charging LED now changes color when charge limit is reached, rather than only at 100%

Non-Deck

• Improved compatibility with recent Intel and AMD platforms

• Greatly improved video memory management on discrete GPU platforms

• Fixed a compatibility issue with the SteamOS chainloader that could cause a boot failure on some desktop systems with recent UEFI firmware

• Power button short and long presses now supported across a wide variety of devices

• Improved controller support for OneXPlayer F1 series, GPD Win 5, GPD Win Mini, Anbernic Win600, OrangePi NEO, and Lenovo Legion Go

• Added controller support for OneXPlayer X1 series and Lenovo Legion Go 2

• Added system and controller firmware update support for the Lenovo Legion Go 2

• Added preliminary charge limiting support for Legion Go, Legion Go S, and Legion Go 2 - currently only accessible in Desktop Mode

• Added controller RGB LED color settings for the Lenovo Legion Go 2

• Added controller, TDP control, and speaker audio support for the ASUS ROG Xbox Ally series

• Reduced handheld controller input latency from 5-8ms to 100-500us

• Night mode, color vibrance, and color temperature sliders in Steam now work on Z2E and later AMD APUs

• Seamless boot fixes for Z2E and later AMD APUs

• Automatically handle internally rotated display for some third-party handhelds

• Improved motion control support for handhelds with BMI260 IMUs

• SD card reliability improvements for some third-party handhelds, including ASUS ROG Xbox Ally, Legion Go 1, Legion Go S, Legion Go 2, and MSI Claw

• Fixed washed out colors for Zotac and OneXPlayer handhelds with OLED

• Fixed some GPU hangs on Phoenix APU devices (Tales of Arise, Octopath Traveler II)

• Fixed ASUS ROG Ally power consumption from fingerprint reader while shut down

• Fixed trackpad losing functionality after sleep/resume on the Legion Go

• Fixed spurious wake-ups when using a Logitech Bolt receiver

Developer

• Desktop Mode now uses Wayland by default

  • X11 support may still be selected via Steam developer settings, or via `steamosctl`

• Updated Linux kernel to 6.16

• Steam now uses steamos-manager to query available desktop sessions and trigger desktop session switching

• Added support for setting the desktop password in developer settings

• Initial support for running as a Virtual Machine guest (virtio guest drivers)

• Added support for third-party devices to trigger the SteamOS boot menu via EFI variable

• Added `custom-update` verb to `atomupd-manager` for easier testing of specific builds

• System reports now include more audio debug information

• Initial support for LAVD CPU scheduler via `steamosctl set-cpu-scheduler lavd`

SteamOS 3.7.25 has just been released for all users with the following changes:

General

• Security and stability updates

We have just shipped an updated Steam Deck Client to the Preview/Beta channel.

General

• Fixed an issue where the Steam Workshop would download an older version of an item if there were multiple versions of the item that were marked valid for game beta branch the user opted into.

• Fixed Steam html surfaces failing to render in some games (e.g. motd in Team Fortress 2).

Steam Input

• Fixed FlyDigi Vader 5 Pro in enhanced mode

• Steam Controller: Triggers and Grip Sense Activators now pulse the Rumble Haptics instead of Touchpad Haptics

• Steam Controller: if Grip Sense is used with an Activator slot, or as one of the Gyro Enable Buttons, default Haptics Level to low. This is to help confirm activation in the absence of true physical response. To disable, set the Haptics setting to "Off" in Grip Sense activator settings, or if used as a Gyro Enable Button, set Haptics to "Off" in the Gyro mode settings.

• Fix: "Reset Camera To Horizon" action was inconsistent in different engines - turn commands chunked into 2 to improve consistency.

• Fix: Quick Settings Left Trackpad points to correct settings, instead of toward Gyro.

• Steam Controller: Minor improvement to gyro micro stutter (ignore clone packets)

• Gyro to Joystick Camera: Defaulted Gyro Deadzone Speed and Gyro Precision Speed to 0 to aide tuning the correct Minimum Joystick Output - these settings would swallow the micro movements needed to check the minimum response to gyro movements. Also: added Minimum Joystick Output slider on the Configurator Quick Settings list.

• Fixed not being able to use Grip Sense to activate Touch Menus.

Steam Controller Firmware

• Additional fixes for trackpad 'dead zone' issues experienced by some Steam Controllers.

• Fixed IMU failures when using extended rumble.

アップデートされたSteam Deckクライアントをプレビュー／ベータチャネルでリリースしました。

全般

• コントローラのファームウェアを更新中に、まれにSteam Controllerのウェルカムダイアログが表示されることがある問題を修正。

Remote Play

• ローカル以外のストリーミング時に、クライアントが短時間で切断される問題を修正。

Steam入力：

• 以前のベータクライアントで発生していた、いくつかの小さなスタイリングのリグレッションを修正。

Steam Controllerファームウェア：

• 連続的なランブルによりジャイロの入力が途切れることがある問題を修正。

• トラックパッドのタッチ設定を再調整。

アップデートされたSteam Deckクライアントをプレビュー／ベータチャネルでリリースしました。

全般

• Steam Controllerに関連するクラッシュの問題を修正。

• 「Legacy Steam Runtime」互換性ツールが、Steamクライアントに含まれる代わりに、オプションの単体のダウンロードとして提供されるように変更。

ライブラリ

• コントローラ使用時のEULAのスクロール動作を改善。

設定

• デスクトップモード、Big Pictureモード、コントローラ設定におけるクライアント設定のレイアウトとスタイルを更新し、読みやすさと構成を改善。

• メール、クライアント、モバイルの通知設定を1か所で変更できるように通知設定を更新。

• 特定の設定ページに直接移動すると（つまり、ヘッダーのネットワークアイコンをアクティブにすると）、設定ナビゲーションメニューではなく、そのセクションの最初の設定にフォーカスするように変更。

フレンド＆チャット

• デバイスのスリープ状態を解除したり、ネットワーク接続を切り替えたりした後、フレンドのステータスがより迅速に更新されるように変更。

Steam入力

• 互換性のない入力から複数の設定オプションを削除。 デジタルボタンは、アナログ入力を必要とする「押す」タイプを設定できなくなり、ジャイロは、互換性のないパイ型メニューやホットバーに設定できなくなりました。 これらのオプションは、互換性のあるすべての入力で引き続き使用可能です。

• 「ジャイロからジョイスティックカメラ」のタイミングの問題を修正。今後は、すべてのコントローラでよりスムーズに動作するはずです。

• 「ジャイロからジョイスティックカメラ」の設定に、ジャイロのラチェット動作中の角度追尾を有効にできるオプションを追加。

• Steam Controllerのジャイロで微細なスタッターが発生していた問題を修正。

• 「トラックパッドロックアウト」をオフにできるように変更。デフォルトでは、対応するジョイスティックが傾けられているか、またはジョイスティックの静電容量式センサーが作動している間は、各トラックパッドが無効になります。 これにより、ジョイスティック使用中のトラックパッドの誤操作を防ぎます。 これは、「設定」＞「コントローラ」＞「詳細」＞「キャリブレーション＆詳細設定」＞「トラックパッドロックアウト」で設定できます。

• グリップセンサーのセンサー設定ページのグリップ範囲スライダーを修正し、説明を変更。

デスクトップモード

• ドロップダウンをクリックしたときや、プロフィールにマウスを合わせたときに開くウインドウが画面上に表示されたままになる問題を修正。