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Logitune is a native Linux configurator for Logitech HID++ peripherals, starting with the MX Master 3S. It communicates directly with the device over hidraw using the HID++ 2.0 protocol — no Solaar, no logiops, no daemon. Just a Qt 6 / QML desktop application with a system tray icon.
- Per-application profiles — DPI, SmartShift, scroll, button assignments, and gestures switch automatically when you change window focus
- Button remapping — Assign keystrokes, app launches, gesture triggers, or SmartShift toggle to any configurable button
- Gesture system — Hold the gesture button and swipe up/down/left/right or click for five independent actions
- Thumb wheel modes — Horizontal scroll, zoom (Ctrl+scroll), or volume control
- SmartShift control — Toggle ratchet/freespin mode and adjust the auto-disengage threshold
- Hi-res scroll — Toggle high-resolution scrolling and natural (inverted) direction
- DPI slider — 200 to 8000 DPI in 50-step increments
- Battery monitoring — Real-time level and charging status in the system tray
- Easy-Switch — View paired hosts and active slot
- Transport failover — Seamlessly switch between Bolt receiver and Bluetooth connections
- Crash reporting — Built-in crash handler with one-click GitHub issue filing
The UI is modeled after Logitech's Options+ application — a sidebar navigation with pages for Point & Scroll, Buttons, Easy-Switch, and Settings, plus a profile bar at the bottom.
| Page | Description |
|---|---|
| Getting Started | Installation, first run, permissions, UI overview |
| Building | Build from source, native packages, devcontainer, CI |
| Architecture | System design, signal flow, MVVM, HID++ protocol layer |
| Adding a Device | Step-by-step JSON descriptor workflow with a worked MX Master 3S example |
| Editor Mode | Visual editor for existing device descriptors: positions hotspots, slot circles, image uploads |
| Adding a Desktop Environment | How to add GNOME, Hyprland, or other DE support |
| Testing | Test philosophy, tiers, infrastructure, how to write tests |
| Contributing | Fork workflow, code style, commit format, PR checklist |
| HID++ Protocol | Deep dive into HID++ 2.0, feature discovery, report format |
Logitune supports nine Logitech mice today — see the Supported Devices table. The architecture is designed to make adding new devices straightforward: most contributions are a single JSON descriptor. See Adding a Device.
| Device | PID | Connection | Status |
|---|---|---|---|
| MX Master 2S | 0xb019 |
Bolt / Bluetooth | ✅ Verified |
| MX Master 3S | 0xb034 |
Bolt / Bluetooth | ✅ Verified |
| MX Master 4 | 0xb042 |
Bolt / Bluetooth | ✅ Verified |
| MX Anywhere 3 |
0xb025, 0x4090
|
Bolt / Bluetooth | 🧪 Beta |
| MX Anywhere 3 for Business | 0xb02d |
Bolt / Bluetooth | 🧪 Beta |
| MX Anywhere 3S | 0xb037 |
Bolt / Bluetooth | 🧪 Beta |
| MX Anywhere 3S for Business | 0xb038 |
Bolt / Bluetooth | 🧪 Beta |
| MX Vertical |
0xb020, 0x407b
|
Bolt / Bluetooth | 🧪 Beta |
| MX Vertical for Business | 0xb020 |
Bolt / Bluetooth | 🧪 Beta |
The full per-feature table (Battery, DPI, SmartShift, Thumb wheel, Button remap, Gestures, Smooth scroll, Easy-Switch) lives in the README and is auto-generated from devices/*/descriptor.json.
| DE | Compositor | Focus Tracking | Status |
|---|---|---|---|
| KDE Plasma 6 | KWin | KWin script via D-Bus + polling fallback (KWin 6 quirk) | Fully supported |
| GNOME 42+ (Wayland) | Mutter | GNOME Shell extension (auto-installed on first launch) via D-Bus | Fully supported |
| Generic (other DEs) | Any | Polling fallback | Basic support — device configuration works; per-app profile switching does not |