Valve continues its aggressive expansion of SteamOS beyond the Steam Deck with the release of version 3.7.8, marking another significant step in bringing its gaming-focused Linux distribution to third-party handheld devices. This latest update officially certifies the Lenovo Legion Go S while introducing several improvements that benefit the broader handheld gaming ecosystem.
Official Legion Go S Certification Arrives
The centerpiece of this update is the official support for Lenovo's Legion Go S, making it the latest third-party handheld to receive Valve's blessing. This certification comes just days before the device's official launch, providing potential buyers with confidence that the handheld will run SteamOS without compatibility issues. The update specifically addresses installation problems that previously prevented some applications from working properly on the Legion Go S and adds a dedicated SteamOS Compatible library tab to help users identify games that will run smoothly on the platform.
Newly Supported Hardware
- Lenovo Legion Go S: Full official support with dedicated library tab
- Proteus Byowave Controller: USD 299 modular accessibility controller
- Improved AMD Compatibility: Enhanced support for ROG Ally and original Legion Go
- Bluetooth Controllers: Wake functionality extended to LCD Steam Deck models
Battery Health Management Goes Mainstream
After extensive beta testing, Valve has officially introduced the 80% battery charge limit feature to the stable SteamOS build. This power management option allows users to cap their device's maximum charge at 80%, which can significantly extend battery lifespan over time. The feature proves particularly valuable for users who frequently keep their handhelds docked or constantly plugged in, as limiting the charge prevents the battery degradation that typically occurs when devices remain at 100% charge for extended periods.
Battery and Power Management Features
- 80% Charge Limit: Now available in stable build for long-term battery health
- VRR Frame Limiting: Support for both internal and external Variable Refresh Rate displays
- AMD P-State Control: Improved CPU frequency management for better power efficiency
- Bluetooth Battery Display: Shows battery levels for supported Bluetooth devices
Enhanced AMD Compatibility Broadens Device Support
The update brings substantial improvements for AMD-powered handhelds beyond just the Legion Go S. Valve has specifically enhanced compatibility for devices like the ASUS ROG Ally and the original Lenovo Legion Go, though the company cautions that not all AMD-powered devices will work seamlessly with SteamOS. For adventurous users wanting to test compatibility with their own AMD handhelds, Valve provides an updated recovery image along with detailed installation instructions.
Controller and Bluetooth Improvements
SteamOS 3.7.8 addresses several input-related issues that have plagued users. The update fixes a persistent problem where Nintendo Switch Pro Controller gyroscopes would fail to work on first connection, requiring multiple reconnection attempts. Additionally, Valve has added support for the Proteus Byowave controller, a USD 299 modular input device designed for players with disabilities or those preferring customized configurations.
Bluetooth functionality receives notable enhancements, including battery level displays for supported devices and the extension of Bluetooth wake functionality to LCD Steam Deck models. Previously, only OLED units could be awakened using Bluetooth controllers. The update also enables HFP/HSP profiles, allowing users to utilize integrated microphones from Bluetooth headsets and earbuds, though this feature currently requires activation through Desktop mode.
Technical Foundation Upgrades
Under the hood, SteamOS 3.7.8 brings significant technical improvements. The update transitions to a newer Arch Linux base and upgrades the Linux kernel to version 6.11, providing better hardware compatibility and performance. Desktop users benefit from the jump to Plasma 6.2.5 from the previous 5.27.10 version, bringing modern interface improvements and enhanced functionality.
The update also introduces frame limiting support for Variable Refresh Rate (VRR) displays, both internal and external, giving users better control over their gaming experience. Graphics performance receives attention through updated Mesa drivers and the enablement of AMD P-State CPU frequency control for more efficient power management.
SteamOS 3.7.8 Key Technical Updates
| Component | Update |
|---|---|
| Linux Kernel | Updated to 6.11 |
| Desktop Environment | Plasma 6.2.5 (from 5.27.10) |
| Base System | Newer Arch Linux base |
| Graphics Drivers | Updated Mesa graphics driver base |
| CPU Control | AMD P-State frequency control enabled |
Recovery and Troubleshooting Enhancements
Valve has updated the SteamOS recovery image to support both Steam Deck and Legion Go S devices, making it easier for users to repair or reinstall the operating system when issues arise. The company has also improved system robustness when handling out-of-memory situations and enhanced the System Report functionality for better support and troubleshooting capabilities.
This comprehensive update demonstrates Valve's commitment to expanding SteamOS beyond its own hardware while continuously improving the platform's stability and feature set. As more manufacturers consider SteamOS as an alternative to Windows for handheld gaming devices, these improvements position Valve's platform as an increasingly viable option for the growing handheld PC gaming market.