Mit dem Release von SteamOS 3.3, der neuesten Version des auf das Steam Deck angepassten Linux-Betriebssystems auf Basis von Arch Linux, optimiert Valve jetzt unter anderem die Leistung seines Zen-2-RDNA-2-Handheld-Gaming-PCs sowie dessen Wi-Fi-Empfang über das 5-GHz-Netz. Die Release Notes fallen diesmal umfangreich aus.
SteamOS 3.3 ist ein großes Facelift für das Steam Deck
Neben neuen Gerätetreibern und einer aktualisierten Firmware, die für eine höhere Kompatibilität und mehr Leistung sowie eine verbesserte Wi-Fi-Stabilität sorgen sollen, bessert Valve unter anderem auch in den Bereichen Audio und Bluetooth sowie den Eingabegeräten nach und unterstützt jetzt neue und kommende Revisionen von bekannten Controllern. Auch der Desktop-Modus erhält eine Produktpflege.
Valve optimiert fast alle Bereiche
Die offiziellen Release Notes von SteamOS 3.3 und dem damit einhergehenden neuesten Steam Deck Client Update listen unter anderem auch mehrere Verbesserungen für die Installation und Aktualisierung von Apps via Flatpak – beispielsweise Firefox – und das Discover Software Center von KDE Plasma auf.
Ebenfalls neu sind das KDE Plasma Classic Theme („VGUI2“) und ein verbesserter Support für 32-Bit-Spiele, welche die offene Advanced Linux Sound Architecture (ALSA) nutzen.
General
Added Achievements page to overlay (while in-game press Steam button)
Added Guides page to overlay (while in-game press Steam button)
Added notification when Steam Deck temperature goes outside the safe operating range
Added a scheduled night mode feature, allowing players to choose if and when they’d like night mode to automatically turn on
Added a button to clear entered text in search bar
Adaptive Brightness toggle is now active again
Fixed notification for claiming digital rewards firing endlessly for some customers
Fixed issue with medium length game names in the Main Menu Overlay not properly scrolling
Fixed some issues with claiming Steam Deck digital rewards
Fixed sound playing for achievement progress notifications
Fixed washed-out colors in the Remote Play client when playing with specific hosts
Fixed Xbox login window for Flight Simulator and Halo Infinite not rendering certain characters properly
Steam Input
Added missing Deck buttons for Gyro Enable and Button Chord options
Added support for game-bundled Virtual Menu icons in the in-game Deck UI
Miscellaneous performance improvements
Keyboards
Added support for Simplified Chinese, Traditional Chinese, Japanese, and Korean keyboard. We are still refining these keyboards, please provide feedback in the forums.
Added initial IBus IME input support on the desktop for Chinese, Japanese, and Korean keyboards
Fixed desktop mode keyboard sometimes failing to show or dismiss
Fixed on-screen keyboard showing up under the Steam or Quick Access menu
Updated keyboard behavior for improved fast typing on trackpad and touchscreen. (pressing a key while holding another key will now commit the held key instead of waiting for first to release)
Fixed some touch styling issues with the virtual keyboard
Performance / Stability
Fixed some performance problems for users with many screenshots
Fixed several crashes related to managing screenshots
Fixed several crashes related to non-Steam shortcuts
Fixed some native Linux games not exiting when force-quit through Steam
Fixed flatpak Chrome closing improperly when quit through Steam
Fixed a bug where some flatpak applications (like Edge) couldn't successfully quit
Fixed a performance issue with some games when the backlight changes intensity
Desktop Mode
Updated Firefox to be installed as a Flatpak, rather than from the OS repositories, to ensure timely updates
First-time launches of Firefox from the desktop will now prompt for installation via the Discover Software Center, which will handle updates as they are published.
Updated network connections created/edited on the desktop to default to system-wide, ensuring they are available in gaming mode
Added VGUI2 Classic Plasma Desktop theme
Resized virtual keyboard in Desktop mode to the appropriate dimensions
Added support for the Qanba Obsidian and Qanba Dragon arcade sticks in Desktop mode
Docked Mode
Added an option to scale the Steam Deck user interface for external displays
Added a toggle for automatic scaling of the Steam Deck user interface for external displays
Added ability to adjust image display settings for external displays that have overscan issues
Fixed the panel staying off when disconnecting from dock shortly after resuming from sleep
Fixed the panel backlight staying on while docked
Audio / Bluetooth
Fixed Bluetooth profile selection not being saved when switching away from Desktop mode
Fixed echo cancellation CPU overhead when the microphone isn't being used, improving power usage in idle or near-idle scenarios
Fixed multi-channel audio on external displays
Fixed audio out on some capture cards
Fixed some instances of corrupt audio after resuming from sleep
Fixed audio output with some 32-bit games that use ALSA
Drivers / Firmware
Updated graphics driver with compatibility and performance fixes
Updated wireless driver with fixes for WiFi disconnection issues on 5Ghz
Updated controller firmware utilities to support future controller hardware revisions
SteamOS 3.3 – Release Notes
Freie Wahl bei den Entwicklungszweigen
Neu ist zudem auch der sogenannte „Update Channel Selector“, welcher dem Anwender ab sofort die Wahl zwischen den drei Entwicklungszweigen „Stable“, „Beta“ und „Preview“ des Betriebssystems SteamOS lässt.
System Updates
Added a new Steam Deck software update channel selector – there are now three options:
Stable: Recommended experience for most users. This option will install the latest stable Steam Client and SteamOS.
Beta: Testing for new Steam features. Updates frequently. This option will install Steam Client Beta and the latest stable SteamOS.
Preview: Testing for new Steam and system-level features. Updates frequently. You may encounter issues. This option will install Steam Client Beta and the SteamOS Beta.
You will only see patch notes for the update channel you've selected.
SteamOS 3.3 – Update Channel Selector
SteamOS 3.3 wird bereits verteilt
Der Rollout von SteamOS 3.3 und des inkludierten Steam Client Updates über den Stable Channel hat bereits begonnen und erfolgt wie gewohnt in Wellen.
Auch in Sachen kompatible Spiele geht es mittlerweile zügig voran: Valve hat rund 2.000 Spiele auf dem Steam Deck getestet und davon 662 als „Steam Deck Verified“ und zusätzlich 587 als „Steam Deck Playable“ eingestuft.
Fabian und 
Jan-Frederik