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Desktop Mode and KDE Updates

Third-Party Application Enhancements

Valve has launched the beta version of SteamOS 3.8, introducing initial support for the forthcoming Steam Machine hardware, codenamed “Second Clutch.”

This release addresses updates to the Arch Linux architecture, the graphics driver, and provides a host of stability and compatibility improvements. Users can enable the update within the “Settings” — “System” — “System Update” section.

One key fix resolves the issue where dropdown menus failed to display in certain games. The update also improves VRR frame synchronization and enhances support for games that attempt to open PDF files in external viewers.

A progress indicator now appears on the Steam Deck controller splash screen during firmware updates. A specific issue on some versions of the Steam Deck, which could result in the left controller malfunctioning during a gaming session, has been fixed.

Another bug related to switching input devices when connecting a wired headset has been resolved. Additionally, an error causing sound disruptions after sleep/resume cycles has been addressed. A new option has been added to force mono sound output.

The update includes graphics driver enhancements that boost performance and stability. A bug where application-specific performance settings occasionally failed at game launch has been fixed. Video stream recording support in gaming mode, particularly in OBS and Discord, has been improved.

The Bluetooth activation function for the Steam Deck LCD, previously problematic, is now restored. Prior errors that led to false activations have been corrected. SteamOS will now identify the number of HDMI channels and display surround sound configurations. Support for Bluetooth microphones has also been added.

KDE Plasma has been updated to version 6.4.3, with Wayland now set as the default. Cases of reduced performance in desktop mode compared to gaming mode have been corrected. Image scaling on televisions has been enhanced, and support for external HDR displays and VRR has been added. Each display now supports individual scaling mode.

Compatibility with the latest Intel and AMD platforms has been enhanced. Video memory management on platforms with discrete GPUs has been improved. A compatibility issue with the SteamOS bootloader that could cause boot failures on certain desktop systems with the latest UEFI firmware has been fixed.

Controller support has been upgraded for various models including OneXPlayer F1, GPD Win 5, GPD Win Mini, Anbernic Win600, OrangePi NEO, and Lenovo Legion Go. New support for OneXPlayer X1 and Lenovo Legion Go 2 controllers is available. Firmware updates for the system and controller for Lenovo Legion Go 2 are now supported. The update also adds control over TDP and audio through speakers for the ASUS ROG Xbox Ally series. SD card functionality for several third-party portable devices, such as ASUS ROG Xbox Ally, Legion Go 1, Legion Go S, Legion Go 2, and MSI Claw, has been improved.

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Previously, it was reported that Valve confirmed the release of Steam Machine and related devices set for 2026. In addition to the Steam Machine, Valve is developing an updated Steam Controller with a design closer to Steam Deck and a wireless VR headset called Steam Frame, intended to compete against Meta’s products.

Valve also warns that users not connected to the preview mode might revert to a limited mode when trying to connect. This can be resolved by enabling the “Advanced Update Channels” option in the developer settings. This issue is expected to be addressed in a future update.

USB controller support, commonly used in racing and other USB devices booting in atypical modes, has been enhanced. These devices often appear as USB drives with driver installers and need to be switched to standard operation mode by the OS.

Firmware changes affect the LCD model, which now uses BIOS version 133 with preliminary support for hibernation mode and a new “Memory Power Off” feature. Valve has also added Bluetooth headset microphone support in gaming mode, HDMI surround sound recognition, monophonic audio output, and several sound fixes related to suspension mode and input switching.

The Steam Machine is anticipated to be costly: retailers have revealed the price.

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