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

General:

• Fixed a regression that caused non-Steam games to fail to launch.

• Fixed the onscreen keyboard not working the first time it is invoked on desktop.

Remote Play:

• Improved color accuracy when streaming an OpenGL game.

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

General:

• Fixed the Recordings & Screenshots dialog not showing all games that have related screenshots in the game filter dropdown.

• Improved the text layout in achievement notifications when the name, description or both wrap across multiple lines.

• Fix some cases of header/footer flicker and invisibility during the first seconds after waking from sleep.

• When waking from sleep with a game running but the account now playing elsewhere:

  • Provide an option to exit the local game.

  • Go back to sleep if there is no input for 60 seconds.

• Fixed issues with trackpad typing if the trackpad is touched while the onscreen keyboard is opening

Steam Input:

• Improved the consistency of trackpad sensitivity between Steam Deck and Steam Controller

• Fixed cases where the Virtual menu modes could show the wrong activation type if it was created in the standalone menu vs from a controller source

• Implemented a version of the "Reorder Controller" dialog for Steam Input API games. Note - this disconnects the controllers temporarily so older games which do not handle hot plugging properly can lose controller input

• Additional polish for the multibinding page

• In the desktop UI overlay the desktop config will now be applied. For most gamepads this will not be a difference in behavior because they have a blank desktop config, but Steam Controllers or devices that have setup a custom desktop config will have mouse input to click on things in the overlay.

Remote Play:

• Improved color accuracy when streaming from a Windows computer

• Fixed the mouse cursor when streaming from Linux using the SteamRT3C client

• Fixed a capture lockup when streaming from pipewire on Linux and SteamOS

• Reduced Pyrowave latency when streaming from pipewire on Linux and SteamOS

• Added the -pyrowavestats command line option to log Pyrowave encoding performance

SteamRT3 Experimental Beta

• Fixed Steam overwriting PATH, LD_PRELOAD, and LD_LIBRARY_PATH variables when launching games.

This update is for the SteamOS 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 3.8 release, with the changes added since the previous 3.9 preview releases noted below

General

• Add preliminary support for Legion Go 2 brightness control

• Fixed Steam Remote Play not working on Steam Machine when booting with no external display connected

• Fixed "Disable Frame Limiter" toggle not working when VRR is enabled

• Fixed the frame limiter incorrectly applying to VR titles when streaming from Steam Machine to Steam Frame

• Fixed loss of input if a launcher window is accidentally dragged around in Game Mode

• Fixed logging in to Desktop Mode via RDP with system users when enabled

• Fixed an issue causing certain games (incl. ELDEN RING and DARK SOULS™ III) to fail to run on recent Panther Lake Intel CPUs

• Worked around a firmware issue on some ASUS devices causing excessive fan speed upon waking from sleep

• Fixed a bug causing hidden WiFi networks to fail to connect on the first attempt

• Fixed boot screen corruption on Intel PTL+ devices

• Fixed a regression from previous 3.9 previews causing Steam Machine to occasionally wake from hibernation unexpectedly

• Fixed a regression from previous 3.9 previews slowing down system boot speed and causing the boot logo to briefly vanish during boot

• Fixed a regression from previous 3.9 previews breaking virtual keyboard input for some languages in Game Mode

• Fixed a regression from previous 3.9 previews with nested desktop mode

• Security and stability fixes

General

• Updated Arch Linux base

• Updated Desktop Mode from Plasma 6.4.3 to Plasma 6.7.3

  • For more information, see
    https://kde.org/announcements/plasma/6/6.7.0/
    https://kde.org/announcements/plasma/6/6.6.0/
    https://kde.org/announcements/plasma/6/6.5.0/

• Fixed a system crash when launching Forza Horizon 6 on Legion Go 2

• Fixed an issue causing frame limits to result in lower than intended FPS on certain external displays

• Fixed issues with suspend/resume on systems with RDNA1 or RDNA2 based dedicated GPUs

• Security and stability updates

Misc

• Updated the bootloader to improve compatibility with certain motherboards

• The Desktop Mode lockscreen is no longer prevented from being explicitly enabled in settings (but remains off by default)

Developer

• Switched WiFi backend to wpa_supplicant by default for new installations, improving compatibility with various WiFi networks

  • Enhanced wpa_supplicant to support fast WiFi reconnect on resume from sleep, previously only available in the iwd backend

  • Known issue: Existing installations will continue to use iwd unless manually enabled in Developer Settings

• Linux kernel rebased on Linux 7.2

• Added preliminary support for hibernation, not yet exposed in Game Mode UI

  • Enhanced Linux kernel hibernation support to enable interrupting hibernate requests and fixed various driver issues

• Various scripts and packages have been renamed from `steamos-` to `holo-`, with aliases to the former names where appropriate

• Improved support for running SteamOS as a VM guest with accelerated graphics (virtio-gpu, venus)

• Updated included renderdoc version

SteamOS 3.8.28 現已推出給所有使用者，其中包含以下變更：:

以下註記包含先前穩定版本 SteamOS 3.8.16 釋出後所有的更動。請參閱此處了解自先前 SteamOS 3.8.27 測試版釋出後的所有變更。

一般

• 更新 Mesa 顯示卡驅動程式至新的主要版本，包含多項光線追蹤效能改良，以及其它效能與功能的改良

• 大幅改良 VRAM 管理，以及在 VRAM 受限時對效能與穩定性的改良

• 現在 Steam Machine 開機後的裝置啟動畫面 / 標誌出現加快

• 新增從 Steam Controller 無線轉接器（2015）進行喚醒的支援

• 改善裝置在充電時，在使用的電量超過充電器提供的電量的情況下顯示的指示

• 對 Steam Frame 無線轉接器的初步支援

• 在內建的 [c]hid_steam[/c] 控制器驅動程式中新增對 Steam Controller（2026）的支援，以在未執行 Steam 時，啟用原生控制器應用程式

• 修正在無音訊來源的非 Valve 裝置中，部份遊戲會出現 20-30 秒啟動延遲的問題

• 修正在沒有擷取裝置的情況下，有些透過 Proton 運作的遊戲啟動時間會延遲的問題

• 修正使特定啟動器出現黑畫面的問題，如：《絕區零》和《FINAL FANTASY XIV Online》

• 修正熱插拔 HDMI 顯示器可能導致在桌面模式卡死的問題

• 修正支援 HDMI「遊戲模式」的電視在開啟時會先顯示初始開機標誌才進入該模式的問題，這會導致不必要的延遲和閃爍

• 修正特定轉接器在使用 Wi-Fi 連線時出現的緩慢或卡住的一些情況

• 修正導致部分使用者無法使用先前的 SteamOS 更新的問題

• 修正桌面模式的 Firefox 有時在全螢幕中會凍結的問題

• 解決 Unreal Engine 5 VR 遊戲可能出現右眼空白的問題

• 修正 Nintendo Switch Pro (v1) 控制器的藍牙不穩定問題

• 修正桌面模式允許部份顯示器的解析度低於 640x480，從而造成無法使用的問題

• 修正若在暫停時移除 SD 卡，然後再繼續就會使系統凍結的程式錯誤

• 修正 Steam Deck 上風扇速度會恢復為 BIOS 控制，直到重新開機為止的罕見問題，這會導致風扇速度高於正常速度

• 修正在配備 AMD 獨立顯示卡的系統上，睡眠 / 喚醒後可能使遊戲效能降低的問題

Steam Machine 韌體 108

• 修正系統有時會在休眠後立即甦醒的問題

• 修正從睡眠甦醒後 CPU 效能低落，需重新啟動才能恢復的罕見問題

音訊

• 新增設定 -> 音效中的選項，可將所有的音訊配置與設定都重設為系統預設值

• 修正部分遊戲搭配電視的組合下 HDMI 音訊中斷的問題

• 提高 HDMI 熱插拔偵測的可靠性

• 新增偏好對藍牙裝置使用較低延遲的音訊轉碼器的選項

非 Valve 裝置

• 改善對 MSI Claw 和 OneXPlayer 同類裝置的支援

• 改善對外接或沒有 Wi-Fi 介面卡的裝置的支援

• 修正當握住部分第三方手持裝置時，輸入會被忽略的少見問題

• 新增對 MSI Claw 8 EX AI+ 遊戲手把的初步支援

• 新增對 Konkr FIT 遊戲手把的初步支援

• 新增對 AYANEO Pocket S2 遊戲手把的初步支援

• 以新韌體更新對 OneXPlayer Apex 遊戲手把的支援

• 新增缺失的 OneXPlayer F1 和 OneXPlayer 2 特別版機型的控制器支援

• 修正會造成部份執行較新韌體的 MSI Claw 裝置失去導覽鍵與快捷選單鍵存取功能的迴歸問題

• 修正造成控制器韌體較舊的 Legion Go 1 機型的陀螺儀無法初始化的迴歸問題

• 修正在 OneXPlayer F1 機型上會阻礙震動且造成搖桿輪詢率低的迴歸問題。且會因此導致 M1（左側）額外肩鍵無法正常作用

• 修正 Lenovo Legion Go 機型上的電量顯示問題

• 修正若在暫停與繼續時裝置內有 SD 卡，則會造成 MSI Claw 卡住的程式問題

開發者

• 更新 Linux 核心至 6.18.50 版本

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

General

• Fixed the on-screen keyboard not popping up in non-Steam games after toggling wifi or suspending the machine

Steam Input

• Fixed the glyphs shown for the Xbox Elite Controller paddle buttons

Remote Play: Pyrowave

• Fixed occasional flickering when streaming to Linux and SteamOS clients

• Switched encoding to use the compute queue to avoid contention with game GPU usage

• Fixed GPU memory leak on the client when frequently changing resolutions