Valve has taken a significant step in expanding its gaming ecosystem by releasing the SteamOS 3.7.0 Preview, codenamed Pi Day. This major update not only enhances the Steam Deck experience but also begins to fulfill Valve's promise of bringing SteamOS to third-party handheld gaming devices, potentially challenging Windows' dominance in the portable gaming PC market.
A Major System Overhaul
The SteamOS 3.7.0 Preview represents one of the most substantial updates to Valve's operating system since the Steam Deck's launch. At its core, the update features a newer Arch Linux base that improves access to software and security updates. The Linux kernel has been upgraded to version 6.11, bringing enhanced performance, security features, and broader hardware compatibility. Additionally, the Mesa graphics driver base has been updated to support the latest graphical technologies.
Key Updates in SteamOS 3.7.0 Preview:
- Updated to newer Arch Linux base
- Linux kernel upgraded to 6.11
- Updated Mesa graphics driver base
- Desktop mode now uses Plasma 6.2.5 (from 5.27.10)
- Initial support for non-Steam Deck handhelds
- Enabled AMD P-State CPU frequency control
- Improved Bluetooth functionality with battery level display
- Added support for Proteus Byowave controller
- Fixed compatibility issues with certain displays
Desktop-Like Experience with Plasma 6
Perhaps the most visually significant change is the upgrade from Plasma 5.27 to Plasma 6.2.5. This leap to Plasma 6 transforms the desktop mode experience on Steam Deck, offering a feature-rich interface that more closely resembles a traditional PC. Built on Qt 6, KDE Frameworks 6, and KDE Gear 24.02, Plasma 6 delivers a modern, responsive environment that enhances productivity when using the Steam Deck beyond gaming. The update also improves surround sound support in desktop mode and offers quicker transitions between desktop and game modes, fixing previous issues with freezes and long loading times.
Opening Doors to Non-Valve Handhelds
The most strategically important aspect of this update is Valve's initial implementation of support for non-Steam Deck handhelds. While currently described as just the beginnings of such support, this move signals Valve's intent to expand SteamOS beyond its own hardware. Currently, the Legion Go S appears to be the first non-Valve device with compatibility, but the company has indicated that more devices will be supported in the future. This development could significantly impact the handheld gaming PC market, where Windows has been the default operating system for most third-party devices despite its limitations in a handheld form factor.
Performance and Hardware Improvements
The update activates AMD P-State CPU frequency control, which should improve power efficiency on Steam Deck and compatible handhelds. Valve has also addressed specific performance issues, including fixing a regression for the game No Rest for the Wicked. The update improves compatibility with certain displays, including TCL FireTV models and Dell VRR-capable monitors, enhancing the docked experience.
Bluetooth and Controller Enhancements
SteamOS 3.7.0 Preview includes several improvements to Bluetooth functionality, such as enabling HFP/HSP profiles to allow the use of integrated microphones from headsets and earbuds. The update adds battery level display for supported Bluetooth devices and fixes issues with devices like AirPods when using the AAC codec. Additionally, Bluetooth controllers can now wake LCD Steam Deck units from sleep, a feature previously available only on OLED models.
Controller support has been expanded to include the Proteus Byowave controller, and issues with Switch Pro Controller gyros have been fixed. The update also addresses problems with stuck or hanging controller inputs when exiting Steam.
Known Issues:
- Creative Zen Air Pro earbuds display unexpected all-zeros entry under "Show all devices" when pairing
- Super NES controllers may erroneously show as connected when they are not
- DualShock 3 controllers currently cannot be paired or used
- Bluetooth LE based controllers are not currently compatible with Bluetooth wake on LCD models
Looking Ahead
While the SteamOS 3.7.0 Preview introduces numerous improvements, it's still in testing, with some known issues acknowledged by Valve. Users interested in trying these features can opt in through Settings > System > System Update Channel. The broader implications of this update extend beyond the Steam Deck itself, as Valve appears to be positioning SteamOS as a viable alternative to Windows for gaming handhelds, potentially starting what some observers are calling a war on handheld Windows.
The gaming community is also still waiting for Valve to deliver SteamOS officially for desktop PCs, which rumors suggest is in development. Such a release could further expand SteamOS's reach and challenge Windows in the broader gaming PC market, not just the handheld segment.