Valve has released the SteamOS 3.8.25 Beta, addressing several persistent issues across its hardware lineup, most notably a bug causing Steam Machines to wake up immediately after being put to sleep. The update is currently available via the beta and preview channels.
Key Fixes and Improvements
Beyond the power-cycling fix, this update targets several display and connectivity issues. Players experiencing HDMI audio dropouts or lockups when hotplugging displays in Desktop Mode should see improvements with this patch. Additionally, the update addresses a rare issue where CPU performance would remain degraded until a reboot following a sleep cycle.
Quick Facts
- Power: Fixed an issue where the system would wake up automatically after entering sleep mode.
- Display: Improved HDMI hotplug detection and resolved audio dropout issues with certain TV combinations.
- Performance: Fixed rare CPU degradation occurring after waking from sleep.
- Controller: Added support for waking the device using the 2015 Steam Controller Wireless Adapter and included driver support for the 2026 Steam Controller.
- Third-Party Hardware: Enhanced support for MSI Claw, OneXplayer, and AYANEO Pocket S2 devices.
Next Steps for Players
Because these fixes are currently in the beta and preview channels, users must manually opt in to receive the update. You can enable this by going to Settings > System > Beta Participation. If you encounter issues with the beta software, you can revert to the stable branch using the same menu settings.
This update also introduces preliminary support for the Steam Frame Wireless Adapter and includes security and stability fixes for the broader SteamOS ecosystem.