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SteamOS 3.10 Preview Adds HDMI 2.1 and Mesh Shaders - briefly|
| (hx) 08:49 AM CET - Nov,15 2026 | Valve has released SteamOS 3.10.0 Preview on the Steam Deck Preview channel.
AMD graphics gain HDMI 2.1 support with VRR, Fixed Rate Link, and Auto Low Latency Mode. NVIDIA users get Mesh Shader support on Turing GPUs and newer, plus fixes for rendering issues in Shadow of the Tomb Raider and The Surge 2.
The build moves to a Linux 7.3 kernel and updates Desktop Mode to KDE Plasma 6.8.2.
It also improves VRR frame timing and reduces screen flickering, adds HDR and brightness controls for the ASUS ROG Xbox Ally X20, and fixes Bluetooth audio dropouts when switching modes.
Valve notes this is an early preview that may contain bugs. A known issue can leave the Dell G3223Q monitor blank on AMD HDMI 2.1.
Users can opt in via Settings > System > System Update Channel.
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