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 640×480 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

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