# Bazzite testing-45.20261031.3 updates Mesa 26.2.6, Gamescope 3.17, UMU Launcher 1.4.4

> **Key takeaway:** The Universal Blue-based SteamOS gaming distribution Bazzite has pushed a testing release bundling Mesa 26.2.6, Gamescope 3.17.0, UMU Launcher 1.4.4, and a 7.2.14 kernel alongside a fix for stale Plasma autologin configuration.

**Published:** 2026-11-01T00:00:35+00:00 
**Source:** Bazzite (Universal Blue SteamOS/Gaming) 
**Category:** open-gaming 
**Canonical URL:** https://fosswire.org/news/bazzite-testing-45202610313-updates-mesa-2626-gamescope-317-.html 

## Summary
Bazzite, the Fedora-based immutable gaming distribution that targets Steam Deck and desktop Linux gaming hardware, has published testing-45.20261031.3 as a pre-release update. This build advances multiple core components including Mesa 26.2.6-2, Gamescope 3.17.0^1-1, Gamescope Session from a 20261002 git snapshot, MangoHUD 0.8.4-2, InputPlumber 0.83.1-3, OpenGamepadUI 0.46.1-8, and UMU Launcher 1.4.4-1. The kernel stack offers two tracks: a 7.2.14-ogc3.1 mainline variant and a 6.18.56-ogc1.1 LTS branch for NVIDIA users, paired with NVIDIA Open 615.78.08-1 and NVIDIA LTS 580.196.07-1 drivers respectively.

Desktop environment updates include GNOME 51.0-2 and KDE 6.8.1-1, while container and compatibility tooling sees Distrobox 1.8.2.5-2, Waydroid 1.6.3-2, and Bazaar 0.9.4-5. The single explicit code change in this release removes a stale Plasma Setup autologin configuration file, addressing a configuration drift issue. Users can rebase to this version via the bazzite-rollback-helper utility.

## Component updates in Bazzite testing-45.20261031.3
- **Graphics stack:** Mesa 26.2.6-2 and Gamescope 3.17.0^1-1 ship alongside a Gamescope Session built from git commit 08e65a6 dated 20261002, updating the Wayland compositor path used for Steam Big Picture and handheld-mode gaming.
- **Kernel and NVIDIA drivers:** Two kernel tracks are provided: 7.2.14-ogc3.1 for general use and 6.18.56-ogc1.1 for NVIDIA LTS, matched with NVIDIA Open 615.78.08-1 and NVIDIA LTS 580.196.07-1 proprietary driver branches.
- **Input and overlay layers:** InputPlumber 0.83.1-3, OpenGamepadUI 0.46.1-8, MangoHUD 0.8.4-2, and PowerStation 0.8.4-2 update controller abstraction, handheld UI, performance overlay, and power management subsystems.
- **Compatibility and scheduling:** UMU Launcher 1.4.4-1 (Unified Linux Game Launcher for Proton/UMU integration) and sched_ext Schedulers 1.1.4-1 advance game compatibility and BPF-scheduler extensibility.
- **Configuration fix:** Commit 044a216 removes a stale Plasma Setup autologin configuration, resolving an autologin state drift issue for KDE Plasma users.

## Why it matters
For Steam Deck and handheld PC Linux gamers running Bazzite, this testing release tightens the feedback loop between upstream Mesa, Gamescope, and UMU Launcher improvements and end-user systems without waiting for Fedora or SteamOS stable cycles. The inclusion of sched_ext Schedulers 1.1.4-1 also signals continued investment in BPF-based CPU scheduling for gaming workloads, a technique being actively upstreamed into the Linux kernel and relevant to latency-sensitive emulation and PC gaming.