SteamOS 3.8.28
SteamOS 3.8.28 has just been released for all users with the following changes:
These notes contain all changes since the previous SteamOS 3.8.16 stable release. See here for changes since the previous SteamOS 3.8.27 beta release.
General
Updated Mesa graphics driver to a new major release, containing many ray-tracing performance improvements, as well as other performance and functionality improvements
Greatly improved VRAM management, improving performance and stability in cases where VRAM is limited
The Steam Machine splash screen/logo now appears much more quickly after device startup
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 [c]hid_steam[/c] controller driver, enabling use with native controller applications when Steam is not running
Fixed 20-30s startup delay in some games on non-Valve devices with no audio sources
Fixed delayed start time for some games under Proton when no capture device is present
Fixed an issue causing black screens in certain launchers, including Zenless Zone Zero and FINAL FANTASY XIV Online
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 on startup 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
Fixed Firefox in Desktop Mode sometimes freezing when fullscreen
Worked around an issue where Unreal Engine 5 VR games could display a blank right eye
Fixed Bluetooth instability with Nintendo Switch Pro (v1) controller
Fixed Desktop Mode allowing resolutions below 640x480 on certain displays, rendering it unusable
Fixed a bug where the system would freeze on resume if an SD card was removed while suspended
Fixed a rare Steam Deck issue where fan speed would revert to BIOS control until a reboot, resulting in higher than normal fan speeds
Fixed an issue where game performance could be degraded after sleep/resume on systems with AMD discrete GPUs
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
Add option to reset all audio configuration and settings to system defaults under Settings -> 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
Added controller support for missing OneXPlayer F1 and OneXPlayer 2 special edition models
Fixed a regression with some MSI Claw devices on newer firmware losing access the Guide and Quick Access Menu buttons
Fixed a regression with Legion Go 1 models on older controller firmware where gyroscope would fail to initialize
Fixed a regression on OneXPlayer F1 models where rumble was being blocked and the joystick poll rate was low. As a consequence, the M1 (left) extra shoulder button is no longer able to function.
Fixed issues with battery display on Lenovo Legion Go models
Fixed a bug where the MSI Claw would freeze on resume if an SD card was present during suspend and resume
Developer
Updated the Linux kernel to 6.18.50
