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.
Known Issues - Beta
There is a known issue with degraded performance in some cases when composition is required (such as when having FSR enabled).
This issue is fixed in the latest SteamOS stable release (3.8.16). Affected users may wish to switch to the stable update channel while we work on bringing this fix to the beta channel.
General
Added support for waking up from the Steam Controller Wireless Adapter (2015)
Improved battery indications when the device is charging in but using more power than the charger can provide
Preliminary support for the Steam Frame Wireless Adapter
Added support for Steam Controller (2026) to the built-in hid_steam controller driver, enabling use with native controller applications when Steam is not running
Fixed an issue where hotplugging HDMI displays could cause lockups in Desktop Mode
Fixed an issue where TVs supporting an HDMI "Game Mode" would display the initial boot logo before engaging said mode, causing unnecessary delay and flashing
Fixed some cases of slow or stuck Wi-Fi connections with certain adapters
Fixed an issue causing previous SteamOS updates to fail to apply for some users
Security and stability fixes
Steam Machine Firmware 108
Fixed an issue where the system could occasionally wake up immediately after going to sleep
Fixed a rare issue where CPU performance could be degraded until reboot after waking up from sleep
Audio
Fix for HDMI audio dropouts with some game and TV combinations
Improve reliability of HDMI hotplug detection
Add option to prefer lower latency audio codecs for Bluetooth devices
Non-Valve Devices
Improve support for MSI Claw and OneXPlayer device variants
Improve support for devices with external or no Wi-Fi adapters
Fixed an infrequent bug where some 3rd party handhelds would have input ignored when held
Added initial gamepad support for MSI Claw 8 EX AI+
Added initial gamepad support for Konkr FIT
Added initial gamepad support for AYANEO Pocket S2
Updated gamepad support for OneXPlayer Apex with new firmware
Developer
Updated the Linux kernel to 6.18.42