Since the release of the Steam Deck, Valve fans have gotten very familiar with the idea of the Proton compatibility layer that allows games written for Windows to run capably on the Linux-based SteamOS (though Valve's efforts in this realm date back further than that). To get more games running on the SteamOS-powered Steam Frame, though, Valve is relying on two additional compatibility layers that are new to the Steam architecture.

The first, FEX, is Valve's port of fex-emu, an open source project that emulates x86 processor instructions on an Arm chipset. Since 2018, what started as a small cross-platform emulation project has grown to include "an advanced binary recompiler that supports all modern extensions of the x86(-64) instruction set," according to the Fex website. The emulator can also make calls to graphics libraries like OpenGL and Vulkan to reduce overhead and uses "code caching to minimize stuttering as much as possible," according to Steam's own developer documentation.

While Proton was based on the pre-existing Wine conversion tool, Valve engineer Pierre-Loup Griffais told The Verge last year that the company has been funding Fex lead developer Ryan Houdek since the project was just a prototype. Back then, Valve was already anticipating that "close to a decade of work [would be] needed before [Fex-emu] would be robust enough people could rely on it for their libraries."

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Proton Experimental traz correções para STEINS;GATE RE:BOOT, EA App e Borderlands 4, além de novos jogos jogáveis no Linux.

O post Proton Experimental ganha correções para Steam, EA App e Borderlands 4 apareceu primeiro em Blog do Edivaldo - Informações e Notícias sobre Linux.

SteamOS is continuing its slow march to fuller support on a wider variety of non-Valve hardware. This weekend's release of the SteamOS 3.8.25 Beta includes "initial gamepad support" for a few recent gaming handhelds and improved support for a few others.

Those newly supported handhelds include MSI's Claw 8 EX AI+, the extremely expensive, extremely powerful handheld built around Intel's Arc G3 processor that launched this summer. While SteamOS has long included beta support for "other AMD powered handhelds," Valve has only recently been working on offering compatibility with Intel-based handhelds like the MSI Claw line. This weekend's update suggests the company hasn't abandoned those efforts and that Intel chips aren't being left out of the SteamOS conversation.

SteamOS 3.8.25 also newly supports the controllers built into Ayaneo's Android-focused Pocket S2 and the more recently released Windows-based Konkr Fit. Valve also says the new OS offers "improved support" for older MSI Claw devices and the OneXPlayer line of portable gaming PCs.

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Most of the Steam Deck imitators on the market right now use AMD silicon, specifically the Ryzen Z-series chips. These are the same chips AMD makes for regular laptops, but with different power settings better suited to a compact handheld system. There are handhelds based on Intel silicon (MSI’s Claw is the main one), but Intel hasn’t yet tried making silicon marketed specifically for that purpose.

Today, the company is throwing its hat in the ring with two Intel Arc G-series processors, which will allow gaming handhelds to leverage the company's genuinely quite good Arc B-series integrated GPUs. Intel says that several Arc G-series handhelds will arrive "starting in June 2026, with broader availability throughout the year." These systems will include a new MSI Claw model, a Predator Atlas 8 from Acer, and a device from OneXPlayer.

Intel normally uses its "Arc" branding for integrated and dedicated GPUs, but in this case, the "Arc" brand encompasses the entire chip, including the CPU, GPU, NPU, and other components.

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