Bazzite testing release updates Mesa, Gamescope, and Nvidia drivers

The Bazzite project has released a new testing iteration, version testing-45.20261107, which provides updated packages for its SteamOS-like gaming environment. This pre-release build is intended for users to test upcoming changes before they reach the stable branch, specifically targeting handheld and desktop Linux gaming setups.

Key updates in this cycle include significant version bumps for the Mesa graphics stack, the Gamescope micro-compositor, and the Nvidia driver suite. The release also includes updates to desktop environments like KDE 6.8.2 and Gnome 51.1, alongside improvements to system utilities such as InputPlumber and the UMU Launcher.

Technical component updates in Bazzite testing-45.20261107

• Graphics and Compositing: Updates include Mesa 26.2.6, Gamescope 3.17.0, and MangoHUD 0.8.4 to improve rendering and overlay performance.
• Nvidia Driver Stack: The release provides Nvidia Open 615.78.08 and Nvidia LTS 580.196.07 for users with proprietary or open-kernel module requirements.
• Gaming Utilities: Updates are present for the UMU Launcher (1.4.4), InputPlumber (0.84.0), and OpenGamepadUI (0.46.1) to enhance controller and compatibility layer management.
• System and Desktop: The build incorporates KDE 6.8.2, Gnome 51.1, and the sched_ext scheduler (1.1.4) for improved system scheduling and desktop usability.

Why it matters

As a specialized gaming distribution, these updates allow developers and enthusiasts to validate the stability of new Mesa and Gamescope versions on Steam Deck-like hardware. This testing phase is critical for ensuring that upcoming driver and compositor changes do not break compatibility with Proton or existing gaming workflows.