Official patch notes for Steam & Steam Deck from Valve, published on Steam on October 16, 2026.
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.
These notes contain all changes since the current stable SteamOS 3.8 release, with the changes added since the previous 3.9 preview releases noted below
New in SteamOS 3.9.3
General
- Fixed performance issues in STAR WARS: Galactic Racer on resume from suspend on Steam Machine
- Fixed an issue that could lead to GPU errors in The Crew Motorfest
- Fixed audio issues on hotplug of certain monitors in a multi-monitor setup
- Improved support for Steam Frame wireless adapter
- Security and stability updates
Developer
- Reintroduce support for Android binder IPC
SteamOS 3.9
General
- Updated Arch Linux base
- Updated Desktop Mode from Plasma 6.4.3 to Plasma 6.7.3
- For more information, see (https://kde.org/announcements/plasma/6/6.7.0/) (https://kde.org/announcements/plasma/6/6.6.0/) (https://kde.org/announcements/plasma/6/6.5.0/)
[*]Fixed a bug causing hidden WiFi networks to fail to connect on the first attempt
[*]Fixed Steam Remote Play not working on Steam Machine when booting with no external display connected
[*]Fixed "Disable Frame Limiter" toggle not working when VRR is enabled
[*]Fixed the frame limiter incorrectly applying to VR titles when streaming from Steam Machine to Steam Frame
[*]Fixed loss of input if a launcher window is accidentally dragged around in Game Mode
[*]Fixed an issue causing frame limits to result in lower than intended FPS on certain external displays
[*]Fixed issues with suspend/resume on systems with RDNA1 or RDNA2 based dedicated GPUs
[*]Fixed a system crash when launching Forza Horizon 6 on Legion Go 2
Read the full announcement on Steam
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Patch notes and news tracker by eSportCafe · source: Steam News