SteamOS 3.8.26 Beta - 28 August 2026

New SteamOS beta update, finally fixing all the composition issues from previous beta builds !

General

• Fixed an issue present in previous beta builds causing degraded performance in some cases when composition is required (such as when having FSR enabled)
• 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 regression from previous beta breaking WiFi connectivity on the MSI Claw A1M
• 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
• Fixed a bug where the system would freeze on resume if an SD card was removed while suspended